CN101982518A - Nano solid-liquid phase change energy storage composite material - Google Patents
Nano solid-liquid phase change energy storage composite material Download PDFInfo
- Publication number
- CN101982518A CN101982518A CN2010102836946A CN201010283694A CN101982518A CN 101982518 A CN101982518 A CN 101982518A CN 2010102836946 A CN2010102836946 A CN 2010102836946A CN 201010283694 A CN201010283694 A CN 201010283694A CN 101982518 A CN101982518 A CN 101982518A
- Authority
- CN
- China
- Prior art keywords
- nano
- phase change
- energy storage
- liquid phase
- inorganic salt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention relates to a nano solid-liquid phase change energy storage composite material, belonging to a phase change energy storage technology. The composite material comprises the following components in parts by weight: 88 to 98 parts of hydrated salt, 1 to 7 parts of a nano material and 1 to 5 parts of thickener. With regard to the nano solid-liquid phase change energy storage composite material, the hydrated salt is taken as a main body for phase change energy storage, thus having higher energy storage density and good heat transfer performance; the nano material is taken as nucleating agent, thereby reducing and even eliminating the degree of supercooling of the hydrated salt and having stable property and corrosion resistance; and a proper amount of the thickener is added to increase the viscosity of liquid hydrated salt, thereby preventing the phase separation of the hydrated salt and simultaneously strengthening the suspension stability of the nano material. The nano solid-liquid phase change energy storage composite material of the invention can be widely applied to the fields of solar thermal utilization, industrial waste heat recovery, air conditioning energy storage and the like.
Description
Technical field
The invention belongs to the phase-changing energy-storing technology, be specifically related to the solid-liquid phase change energy-accumulation material.
Background technology
Energy accumulating technique has purposes very widely.For example in solar thermal utilization, can get up the storage of solar energy that hot joining is received for using at night or rainy weather, improve the unsettled shortcoming of sun power, make energy supplying system stable; In distributed energy resource system, can utilize energy accumulating technique, the internal combustion turbine waste heat is stored, for the user provides hot water or for absorption type air conditioning system provides driving heat source, adjust energy supplying system and user with the coupling between loading; In air-conditioning system, can utilize energy accumulating technique, cold energy or heat energy were stored in the low power consumption period, when peak of power consumption, resupply the user, but peak load shifting reduces user's working cost.Therefore energy accumulating technique has significant application value for the recycling of sun power, waste thermal energy etc., is a kind of effective energy-conserving and emission-cutting technology.
Latent heat accumulator is the main mode of thermal energy storage, and phase change material is the important component part of hidden heat energy storage system.Solid-liquid phase change material is little owing to the phase transformation volume change, stable phase change temperature, and latent heat of phase change is used at most greatly.Solid-liquid phase change material can be divided into organic phase change material and inorganic phase-changing material, organic phase change material (for example paraffin class, fatty acid) has non-corrosiveness, chemistry and thermophysical property and stablizes, do not have or lower advantages such as condensate depression, but density is little, latent heat of phase change is less, therefore the accumulation of energy of unit volume is less, low, the inflammable application that also is unfavorable for organic phase change material of its thermal conductivity in addition.Inorganic phase-changing material mainly is a hydrated inorganic salt phase transformation material, because density is big, latent heat of phase change is big, thereby has bigger energy storage density, has heat transfer property and low price preferably simultaneously, therefore receives much attention.But hydrated inorganic salt phase transformation material has bigger condensate depression with easily separating out the inorganic salt crystal mutually stratified shortcoming to take place, and makes its application be very limited.
Summary of the invention
Cross the cold-peace problem of phase separation in order to solve hydrated inorganic salt phase transformation material, the present invention proposes the hydrous salt phase transition energy-accumulation material of composite nanometer particle.
The technical solution used in the present invention is:
Nano combined solid-liquid phase change energy-accumulation material is by hydrated inorganic salt, nano material, and thickening material is formed.
Described hydrated inorganic salt comprises hydration calcium chloride, hydration sodium sulfate, hydration sodium-acetate, hydrated sodium carbonate, hydrated sodium silicate, hypophosphite monohydrate sodium, hypophosphite monohydrate hydrogen sodium, trisodium phosphate, borax, hydrazine aluminum sulfate ammonium, hydrated magnesium chloride, nitric hydrate magnesium.
Described nano material comprises nano aluminum nitride, nano-silicon nitride, nano titanium oxide, nano silicon, nanometer silicon carbide, nanometer silicon boride, nanometer zirconium boride 99.5004323A8ure.
Described thickening material comprises carboxymethyl cellulose, Xylo-Mucine, polyacrylamide, gelatin.
The quality proportioning of described nano combined solid-liquid phase change energy-accumulation material is: 88～98 parts hydrated inorganic salt, 1～7 part nano material, 1～5 part thickening material.
The collocation method of described nano combined solid-liquid phase change material is:
1. hydrated inorganic salt, nano material, the thickening material of weighing certain mass proportioning;
2. the three is mixed the back in solid-state abundant ground and mixed down;
3. fill compacting in the container;
4. encapsulation or directly encapsulation after the heating and melting.
The another kind of collocation method of described nano combined solid-liquid phase change material is:
1. hydrated inorganic salt, nano material, the thickening material of weighing certain mass proportioning;
2. will add nano material after the hydrated inorganic salt heating and melting, and fully stir concussion, be uniformly dispersed;
3. thickening material is added in the fused solution hydrated inorganic salt, mix;
4. it is liquid keeping nano-composite phase-changing material, fills in the container to encapsulate.
The nano combined solid-liquid phase change material of the present invention based on hydrated inorganic salt, has higher energy storage density and good heat transfer performance; With the nano material is nucleator, can reduce and even eliminate the condensate depression of hydrated inorganic salt, and stable performance, corrosion-resistant; By adding an amount of thickening material, increase the viscosity of liquid hydration inorganic salt simultaneously, can effectively prevent the phenomenon of phase separation of hydrated inorganic salt, can greatly strengthen the suspension stability of nano material simultaneously.
Embodiment
Following examples are only for further specifying the present invention, but the present invention are not construed as limiting.
Embodiment one
92 parts of weighing hydration sodium-acetates, 4 parts of nano aluminum nitride powders, 4 parts of thickening material Xylo-Mucines mix the back in solid-state abundant ground and mixed down with the three, fill compacting in the container, encapsulate after the heating and melting.With the nano combined hydration sodium-acetate phase change material that said ratio obtains, latent heat of phase change is greater than 200kJ/kg, and transformation temperature is higher than 50 ℃, and condensate depression is less than 2 ℃.
Embodiment two
91 parts of weighing hydration sodium-acetates, 5 parts of nano aluminum nitride powders, 4 parts of thickening material Xylo-Mucines mix the back in solid-state abundant ground and mixed down with the three, fill compacting in the container, encapsulate after the heating and melting.With the nano combined hydration sodium-acetate phase change material that said ratio obtains, latent heat of phase change is greater than 200kJ/kg, and transformation temperature is higher than 50 ℃, no condensate depression.
Embodiment three
92 parts in weighing hydration sodium sulfate, 5 parts of nano aluminum nitride powders, 3 parts of thickening material Xylo-Mucines, the nano aluminum nitride powder will be added after the hydration sodium sulfate heating and melting, fully stir concussion, after being uniformly dispersed the thickening material Xylo-Mucine is added, mix, fill in the container at last and encapsulate.With the nano combined hydration sodium sulfate phase change material that said ratio obtains, latent heat of phase change is greater than 200kJ/kg, about 30 ℃ of transformation temperature, and condensate depression is less than 2 ℃.
Claims (4)
1. nano combined solid-liquid phase change material is characterized in that the quality proportioning of described material is: 88～98 parts hydrated inorganic salt, 1～7 part nano material, 1～5 part thickening material.
2. hydrated inorganic salt according to claim 1 comprises hydration calcium chloride, hydration sodium sulfate, hydration sodium-acetate, hydrated sodium carbonate, hydrated sodium silicate, hypophosphite monohydrate sodium, hypophosphite monohydrate hydrogen sodium, trisodium phosphate, borax, hydrazine aluminum sulfate ammonium, hydrated magnesium chloride, nitric hydrate magnesium; Described nano material comprises nano aluminum nitride, nano-silicon nitride, nano titanium oxide, nano silicon, nanometer silicon carbide, nanometer silicon boride, nanometer zirconium boride 99.5004323A8ure; Described thickening material comprises carboxymethyl cellulose, Xylo-Mucine, polyacrylamide, gelatin.
3. the collocation method of the described nano combined solid-liquid phase change material of claim 1 is characterized in that comprising following steps
(1). hydrated inorganic salt, nano material, the thickening material of weighing certain mass proportioning;
(2). the three is mixed the back in solid-state abundant ground and mixed down;
(3). fill compacting in the container;
(4). encapsulation or directly encapsulation after the heating and melting.
4. the collocation method of the described nano combined solid-liquid phase change material of claim 1 is characterized in that comprising following steps
(1). hydrated inorganic salt, nano material, the thickening material of weighing certain mass proportioning;
(2). will add nano material after the hydrated inorganic salt heating and melting, and fully stir concussion, be uniformly dispersed;
(3). thickening material is added in the fused solution hydrated inorganic salt, mix;
(4) it is liquid keeping nano-composite phase-changing material, fills in the container to encapsulate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102836946A CN101982518A (en) | 2010-09-14 | 2010-09-14 | Nano solid-liquid phase change energy storage composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102836946A CN101982518A (en) | 2010-09-14 | 2010-09-14 | Nano solid-liquid phase change energy storage composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101982518A true CN101982518A (en) | 2011-03-02 |
Family
ID=43619430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102836946A Pending CN101982518A (en) | 2010-09-14 | 2010-09-14 | Nano solid-liquid phase change energy storage composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101982518A (en) |
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102408878A (en) * | 2011-09-22 | 2012-04-11 | 北京昌日新能源科技有限公司 | Phase change energy storage material |
| CN102757767A (en) * | 2012-07-25 | 2012-10-31 | 路生吉 | Low-temperature phase change thermal storage material and preparation method thereof |
| CN102757768A (en) * | 2012-07-25 | 2012-10-31 | 路生吉 | Low-temperature phase-change heat storage material and preparation method thereof |
| CN102876301A (en) * | 2011-07-14 | 2013-01-16 | 田金武 | Antifreezing solution |
| CN103865495A (en) * | 2014-04-10 | 2014-06-18 | 李月燕 | Refrigerating liquid for refrigerating foods via impregnation process |
| CN103897666A (en) * | 2014-03-11 | 2014-07-02 | 张宇 | Preparation method of inorganic phase-change heat storage material |
| CN104277769A (en) * | 2014-10-11 | 2015-01-14 | 江苏常州酞青新材料科技有限公司 | Additive formula for sodium sulfate decahydrate phase-change material |
| CN104419381A (en) * | 2013-09-06 | 2015-03-18 | 广州市香港科大***研究院 | Phase change material and preparation method thereof |
| CN104479634A (en) * | 2014-12-18 | 2015-04-01 | 青海大学 | Low-temperature phase-change energy storage material |
| WO2015085761A1 (en) * | 2013-12-12 | 2015-06-18 | 江苏启能新能源材料有限公司 | Phase change energy storage material |
| CN104804712A (en) * | 2015-03-25 | 2015-07-29 | 中山大学 | Metal-chloride melt material with high heat conductivity as well as preparation method and application of metal-chloride melt material |
| CN104830283A (en) * | 2015-06-04 | 2015-08-12 | 上海海事大学 | Low-temperature phase change cold storage material and production method thereof |
| CN106244111A (en) * | 2016-07-29 | 2016-12-21 | 贺迈新能源科技（上海）有限公司 | A kind of nanometer eutectic phase-change material and preparation method |
| CN106479444A (en) * | 2015-08-25 | 2017-03-08 | 中南大学 | Low temperature heat composite phase change heat-accumulation material |
| CN106701035A (en) * | 2016-12-29 | 2017-05-24 | 中国建筑材料科学研究总院 | Nano-composite phase change energy storage material with long cycle life and preparation method thereof |
| CN107325793A (en) * | 2017-07-31 | 2017-11-07 | 河北麦森钛白粉有限公司 | A kind of phase change cold-storage composite and preparation method thereof |
| CN108251074A (en) * | 2018-01-03 | 2018-07-06 | 北京今日能源科技发展有限公司 | A kind of 89 degree of phase-changing energy storage materials |
| CN108456509A (en) * | 2018-03-13 | 2018-08-28 | 青海大学 | A kind of inorganic hydrous salt phase transition energy-storing material and preparation method thereof |
| CN108467711A (en) * | 2018-04-26 | 2018-08-31 | 浙江科技学院 | A kind of inorganic composite phase-change material and preparation method thereof |
| CN108570311A (en) * | 2018-04-23 | 2018-09-25 | 西北大学 | The ternary disodium hydrogen phosphate base phase change heat storage material that can be encapsulated with aluminium |
| CN109082266A (en) * | 2018-08-27 | 2018-12-25 | 西南科技大学 | A kind of Carbon foam base phase-change accumulation energy sensing material of high thermal conductivity and high heat storage coefficient |
| CN109233753A (en) * | 2018-12-03 | 2019-01-18 | 安徽恒明工程技术有限公司 | A kind of phase change heat storage material and preparation method thereof |
| CN109237976A (en) * | 2018-09-03 | 2019-01-18 | 柳曼 | A kind of PCM accumulation of energy structure that can improve energy storage materials of phase change crystallization rate |
| CN110066642A (en) * | 2019-04-09 | 2019-07-30 | 中国科学院过程工程研究所 | 89 ± 7 DEG C of phase transition temperature of phase-changing energy storage material and preparation method thereof |
| CN111721435A (en) * | 2019-03-19 | 2020-09-29 | 苏州博雅聚创新能源科技有限公司 | Temperature testing device and method for phase change energy storage material |
| CN112480877A (en) * | 2020-12-24 | 2021-03-12 | 西北大学 | Calcium chloride dihydrate composite greenhouse phase change heat storage material |
| CN112625656A (en) * | 2021-03-09 | 2021-04-09 | 胜利油田物华石油装备制造有限公司 | Novel composite phase-change heat storage medium |
| CN113717694A (en) * | 2021-08-26 | 2021-11-30 | 国网冀北电力有限公司电力科学研究院 | Composite hydrated salt heat storage material and preparation method and application thereof |
-
2010
- 2010-09-14 CN CN2010102836946A patent/CN101982518A/en active Pending
Non-Patent Citations (4)
| Title |
|---|
| 张伟等: "聚合物基相变储能材料的研究与发展 ", 《塑料》 * |
| 张伟等: "聚合物基相变储能材料的研究与发展", 《塑料》, vol. 37, no. 01, 18 February 2008 (2008-02-18) * |
| 张静等: "相变储能材料的研究及应用 ", 《盐湖研究》 * |
| 张静等: "相变储能材料的研究及应用", 《盐湖研究》, vol. 13, no. 03, 5 September 2005 (2005-09-05) * |
Cited By (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876301A (en) * | 2011-07-14 | 2013-01-16 | 田金武 | Antifreezing solution |
| CN102876301B (en) * | 2011-07-14 | 2014-12-03 | 田金武 | Antifreezing solution |
| CN102408878B (en) * | 2011-09-22 | 2013-12-04 | 北京昌日新能源科技有限公司 | Phase change energy storage material |
| CN102408878A (en) * | 2011-09-22 | 2012-04-11 | 北京昌日新能源科技有限公司 | Phase change energy storage material |
| CN102757767A (en) * | 2012-07-25 | 2012-10-31 | 路生吉 | Low-temperature phase change thermal storage material and preparation method thereof |
| CN102757768A (en) * | 2012-07-25 | 2012-10-31 | 路生吉 | Low-temperature phase-change heat storage material and preparation method thereof |
| CN104419381A (en) * | 2013-09-06 | 2015-03-18 | 广州市香港科大***研究院 | Phase change material and preparation method thereof |
| WO2015085761A1 (en) * | 2013-12-12 | 2015-06-18 | 江苏启能新能源材料有限公司 | Phase change energy storage material |
| CN103897666A (en) * | 2014-03-11 | 2014-07-02 | 张宇 | Preparation method of inorganic phase-change heat storage material |
| CN103897666B (en) * | 2014-03-11 | 2016-04-27 | 张宇 | A kind of preparation method of inorganic-phase variable heat-storing material |
| CN103865495B (en) * | 2014-04-10 | 2016-05-18 | 李月燕 | A kind of freezing liquid for infusion process frozen food |
| CN103865495A (en) * | 2014-04-10 | 2014-06-18 | 李月燕 | Refrigerating liquid for refrigerating foods via impregnation process |
| CN104277769A (en) * | 2014-10-11 | 2015-01-14 | 江苏常州酞青新材料科技有限公司 | Additive formula for sodium sulfate decahydrate phase-change material |
| CN104479634A (en) * | 2014-12-18 | 2015-04-01 | 青海大学 | Low-temperature phase-change energy storage material |
| CN104804712A (en) * | 2015-03-25 | 2015-07-29 | 中山大学 | Metal-chloride melt material with high heat conductivity as well as preparation method and application of metal-chloride melt material |
| CN104804712B (en) * | 2015-03-25 | 2018-01-19 | 中山大学 | The metal chloride fused salt material and preparation method of a kind of high heat conduction and application |
| CN104830283A (en) * | 2015-06-04 | 2015-08-12 | 上海海事大学 | Low-temperature phase change cold storage material and production method thereof |
| CN104830283B (en) * | 2015-06-04 | 2018-05-25 | 上海海事大学 | Low temperature phase change cold storage material and preparation method thereof |
| CN106479444A (en) * | 2015-08-25 | 2017-03-08 | 中南大学 | Low temperature heat composite phase change heat-accumulation material |
| CN106244111A (en) * | 2016-07-29 | 2016-12-21 | 贺迈新能源科技（上海）有限公司 | A kind of nanometer eutectic phase-change material and preparation method |
| CN106701035A (en) * | 2016-12-29 | 2017-05-24 | 中国建筑材料科学研究总院 | Nano-composite phase change energy storage material with long cycle life and preparation method thereof |
| CN106701035B (en) * | 2016-12-29 | 2019-06-11 | 中国建筑材料科学研究总院 | Nano combined phase-changing energy storage material and preparation method thereof with the high circulation service life |
| CN107325793A (en) * | 2017-07-31 | 2017-11-07 | 河北麦森钛白粉有限公司 | A kind of phase change cold-storage composite and preparation method thereof |
| CN108251074A (en) * | 2018-01-03 | 2018-07-06 | 北京今日能源科技发展有限公司 | A kind of 89 degree of phase-changing energy storage materials |
| CN108251074B (en) * | 2018-01-03 | 2020-08-07 | 北京今日能源科技发展有限公司 | 89-degree phase change energy storage material |
| CN108456509B (en) * | 2018-03-13 | 2020-11-06 | 青海大学 | Inorganic hydrated salt phase change energy storage material and preparation method thereof |
| CN108456509A (en) * | 2018-03-13 | 2018-08-28 | 青海大学 | A kind of inorganic hydrous salt phase transition energy-storing material and preparation method thereof |
| CN108570311A (en) * | 2018-04-23 | 2018-09-25 | 西北大学 | The ternary disodium hydrogen phosphate base phase change heat storage material that can be encapsulated with aluminium |
| CN108467711A (en) * | 2018-04-26 | 2018-08-31 | 浙江科技学院 | A kind of inorganic composite phase-change material and preparation method thereof |
| CN109082266A (en) * | 2018-08-27 | 2018-12-25 | 西南科技大学 | A kind of Carbon foam base phase-change accumulation energy sensing material of high thermal conductivity and high heat storage coefficient |
| CN109237976A (en) * | 2018-09-03 | 2019-01-18 | 柳曼 | A kind of PCM accumulation of energy structure that can improve energy storage materials of phase change crystallization rate |
| CN109237976B (en) * | 2018-09-03 | 2022-04-05 | 珠海保能绿色能源科技有限公司 | PCM energy storage structure capable of improving crystallization speed of phase change energy storage material |
| CN109233753A (en) * | 2018-12-03 | 2019-01-18 | 安徽恒明工程技术有限公司 | A kind of phase change heat storage material and preparation method thereof |
| CN111721435A (en) * | 2019-03-19 | 2020-09-29 | 苏州博雅聚创新能源科技有限公司 | Temperature testing device and method for phase change energy storage material |
| CN110066642B (en) * | 2019-04-09 | 2021-06-08 | 中国科学院过程工程研究所 | Phase change energy storage material with phase change temperature of 89 +/-7 ℃ and preparation method thereof |
| CN110066642A (en) * | 2019-04-09 | 2019-07-30 | 中国科学院过程工程研究所 | 89 ± 7 DEG C of phase transition temperature of phase-changing energy storage material and preparation method thereof |
| CN112480877A (en) * | 2020-12-24 | 2021-03-12 | 西北大学 | Calcium chloride dihydrate composite greenhouse phase change heat storage material |
| CN112625656A (en) * | 2021-03-09 | 2021-04-09 | 胜利油田物华石油装备制造有限公司 | Novel composite phase-change heat storage medium |
| CN113717694A (en) * | 2021-08-26 | 2021-11-30 | 国网冀北电力有限公司电力科学研究院 | Composite hydrated salt heat storage material and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101982518A (en) | Nano solid-liquid phase change energy storage composite material | |
| Li et al. | Review on tailored phase change behavior of hydrated salt as phase change materials for energy storage | |
| Huang et al. | Advances and applications of phase change materials (PCMs) and PCMs-based technologies | |
| CN103113854B (en) | A kind of mobile heat supply composite phase-change material and preparation method thereof | |
| Sun et al. | A review on thermal energy storage with eutectic phase change materials: Fundamentals and applications | |
| WO2015085761A1 (en) | Phase change energy storage material | |
| CN100334179C (en) | Solar water heater phase change heat storage material and its preparing method | |
| CN102660230A (en) | Heat superconducting composite phase change energy storage material | |
| WO2017020574A1 (en) | Stable inorganic hydrated salt-based phase change heat storage material and preparation method therefor | |
| CN102746828A (en) | Low-temperature phase-change heat storage material and preparation method thereof | |
| CN107266047B (en) | A kind of rare-earth ceramic high-temperature phase-change stores exoergic material and preparation method thereof | |
| CN112574718B (en) | Hydrated salt/modified expanded graphite shaped phase-change heat storage material for medium and low temperature and preparation method thereof | |
| CN106634858B (en) | Composite phase-change energy-storing material and its preparation method and application | |
| CN107523272B (en) | High-thermal-conductivity binary low-eutectic-temperature-coefficient hydrated salt phase-change material and preparation method thereof | |
| Dong et al. | Review of latent thermal energy storage systems for solar air‐conditioning systems | |
| Chen et al. | A review of the application of hydrated salt phase change materials in building temperature control | |
| CN102252545A (en) | Fused salt phase change heat storage device applied to solar air conditioner | |
| CN102268244A (en) | Preparation method of low-temperature inorganic eutectic salt phase-change material | |
| CN109609098A (en) | A kind of composite phase-change heat-storage material and its preparation | |
| CN106893562B (en) | A kind of composite phase-change energy storage material and preparation method | |
| CN112940685A (en) | Phase-change energy storage material and preparation method thereof | |
| CN102268245B (en) | Preparation method of room temperature inorganic phase-change material | |
| kumar Dubey et al. | Emerging phase change materials with improved thermal efficiency for a clean and sustainable environment: an approach towards net zero | |
| CN102757768A (en) | Low-temperature phase-change heat storage material and preparation method thereof | |
| CN102492398B (en) | Preparation method for high-performance room-temperature calcium-based composition phase-change energy storage material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110302 |