CN107021520B - A kind of yttrium oxide powder and preparation method thereof - Google Patents
A kind of yttrium oxide powder and preparation method thereof Download PDFInfo
- Publication number
- CN107021520B CN107021520B CN201710427928.1A CN201710427928A CN107021520B CN 107021520 B CN107021520 B CN 107021520B CN 201710427928 A CN201710427928 A CN 201710427928A CN 107021520 B CN107021520 B CN 107021520B
- Authority
- CN
- China
- Prior art keywords
- yttrium oxide
- preparation
- oxide powder
- yttrium
- glycerine
- 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.)
- Active
Links
- 239000000843 powder Substances 0.000 title claims abstract description 51
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 235000011187 glycerol Nutrition 0.000 claims abstract description 16
- NGDQQLAVJWUYSF-UHFFFAOYSA-N 4-methyl-2-phenyl-1,3-thiazole-5-sulfonyl chloride Chemical compound S1C(S(Cl)(=O)=O)=C(C)N=C1C1=CC=CC=C1 NGDQQLAVJWUYSF-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000002243 precursor Substances 0.000 claims abstract description 15
- 240000006063 Averrhoa carambola Species 0.000 claims abstract description 11
- 235000010082 Averrhoa carambola Nutrition 0.000 claims abstract description 11
- 238000001354 calcination Methods 0.000 claims abstract description 9
- 230000001376 precipitating effect Effects 0.000 claims abstract description 7
- 239000012467 final product Substances 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 19
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 8
- 239000000908 ammonium hydroxide Substances 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 6
- 239000011159 matrix material Substances 0.000 abstract description 5
- 239000007769 metal material Substances 0.000 abstract description 5
- 239000000470 constituent Substances 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract description 2
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- QBAZWXKSCUESGU-UHFFFAOYSA-N yttrium(3+);trinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Y+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O QBAZWXKSCUESGU-UHFFFAOYSA-N 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000001027 hydrothermal synthesis Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 241000219000 Populus Species 0.000 description 1
- 240000005809 Prunus persica Species 0.000 description 1
- 235000006040 Prunus persica var persica Nutrition 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
Abstract
The present invention relates to a kind of yttrium oxide powders and preparation method thereof, belong to a kind of material preparation process.The preparation method of yttrium oxide powder of the present invention, comprising the following steps: 1) yttrium nitrate is dissolved in glycerine and water, then tune pH to pH=8~10, then in 160~170 DEG C of 14~16h of reaction, obtains reaction solution；2) reaction solution obtained by step 1) is filtered, gained precipitating it is washed, dry precursor powder；3) by 600~700 DEG C of 2~3h of calcining of precursor powder obtained by step 2) to obtain the final product.The submicron order carambola shape yttrium oxide powder obtained using preparation method of the present invention, large specific surface area, when hardening constituent as metal material, the special groove structure of carambola shape yttrium oxide can be preferably fixed in the matrix of metal material, the more effectively growth of limitation matrix, keep crystal grain more tiny, there is widely application.
Description
Technical field
The present invention relates to a kind of yttrium oxide powders and preparation method thereof, belong to a kind of material preparation process.
Background technique
With the progress of science and technology, superconductor, ceramic material, fluorescent material are grown rapidly, the preparation of rare earth powder
It is also had received widespread attention with application.Rare earth oxide yttrium oxide in high temperature alloy there is stronger oxide dispersion intensifying to make
With, and using more in fluorescent material, high-strength alloy and superalloy.Therefore being prepared into for yttrium oxide powder is ground
One of hot spot studied carefully.
Wang Ying etc. has delivered one in 2013 about the " growth of the rodlike yttrium oxide powder of hydrothermal synthesis in functional material
The research of journey and growth mechanism " report, specifically the preparation method comprises the following steps: 0.58g yttrium nitrate hexahydrate is dissolved in 10ml deionization
In water, ammonium hydroxide is then added, is added in constant temperature blender with magnetic force and stirs in drop, gained colloidal substance tune pH to 9, hydro-thermal reaction
Temperature control obtains oxygen in 80~180 DEG C of 2~8h of reaction, cooled product centrifugation, washing, drying at room temperature, 600 DEG C of high-temperature heat treatment 4h
Change yttrium nanometer rods.
Nanometer rods yttrium oxide is small with alloy contact face in alloy preparation process, cannot preferably strengthen stabilized matrix phase.
Therefore, the application prospect that a kind of yttrium oxide powder of large specific surface area has had is researched and developed.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation methods of yttrium oxide powder, have obtained a kind of poplar of large specific surface area
Peach shape yttrium oxide powder.
The present invention second is designed to provide a kind of yttrium oxide powder obtained using above-mentioned preparation method, and shape is
Carambola shape.
To achieve the above object, the technical scheme is that
A kind of preparation method of yttrium oxide powder, comprising the following steps:
1) yttrium nitrate, glycerine, water are uniformly mixed and solution is made, then adjust pH to 8~10, then is anti-at 160~170 DEG C
14~16h is answered, reaction solution is obtained；
2) reaction solution obtained by step 1) is filtered, gained precipitating it is washed, dry precursor powder；
3) by 600~700 DEG C of 2~3h of calcining of precursor powder obtained by step 2) to obtain the final product.
Yttrium nitrate is yttrium nitrate hexahydrate in step 1).Water is deionized water in step 1).
Yttrium nitrate, glycerine, water are uniformly mixed to the specific steps that solution is made are as follows: first add in step 1) into yttrium nitrate
Enter glycerine, adds water.
Every 5g yttrium nitrate is corresponding in step 1) is added 10~15mL glycerine and 40~45mL water.
PH is adjusted to use ammonium hydroxide in step 1).
It is 10 that pH is preferably adjusted in step 1).
After pH to 8~10 is adjusted in step 1), solution is placed in autoclave, then react at 160~170 DEG C 14~
16h.The volume of the autoclave is 100mL.The compactedness of solution is 50%~70% in above-mentioned autoclave.
Vacuum filtration is filtered into step 2).
Washing is with deionized water to washing of precipitate 5~6 times in step 2).
Dry in step 2) is 60~80 DEG C of 4~6h of vacuum drying.
Gained precursor powder ground processing before calcination in step 2).
In step 3) after 600~700 DEG C of 2~3h of calcining, it is air-cooled to room temperature.
A kind of yttrium oxide powder that the preparation method using above-mentioned yttrium oxide powder obtains, shape are carambola shape.It is described
Yttrium oxide powder length direction average-size is about 6 μm.The yttrium oxide powder transverse direction average-size is about 2 μm.
It is intercrystalline that organic solvent glycerine obstruction is added using hydrothermal synthesis method in the preparation of yttrium oxide powder of the present invention
Reunite, realizes the transformation of shape, and glycerine is not involved in the precipitation reaction of yttrium nitrate and ammonium hydroxide.It is obtained using preparation method of the present invention
The submicron order carambola shape yttrium oxide powder arrived, large specific surface area have strong binding ability with metal material, as metal material
When the hardening constituent of material, the special groove structure of carambola shape yttrium oxide can be preferably fixed in the matrix of metal material, more be had
The growth of the limitation matrix of effect, keeps crystal grain more tiny, has widely application.
Detailed description of the invention
Fig. 1 is the XRD diagram of 1 gained yttrium oxide powder of embodiment；
Fig. 2 is that the SEM of 1 gained yttrium oxide powder of embodiment schemes.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
Embodiment 1
The preparation method of the present embodiment yttrium oxide powder, comprising the following steps:
1) yttrium nitrate hexahydrate 5g is weighed, glycerine 10mL is added, then adds 45mL deionized water, obtains solution A, to
Ammonium hydroxide tune pH=8 is instilled in solution A, obtains mixed solution B；
2) the mixed solution B that step 1) obtains is put into the autoclave of 100mL polytetrafluoroethyllining lining, in baking oven
In 170 DEG C of reaction 15h, the obtained precipitating of reaction is filtered by vacuum, is washed with deionized 5 times, 60 DEG C in drying box
It is dried in vacuo 4h, obtains precursor powder；
3) precursor powder for obtaining step 2) is ground, and then 600 DEG C of calcining 3h in Muffle furnace, are air-cooled to room temperature,
Obtain carambola shape yttrium oxide powder.
Embodiment 2
The preparation method of the present embodiment yttrium oxide powder, comprising the following steps:
1) yttrium nitrate hexahydrate 5g is weighed, glycerine 15mL is added, then adds 40mL deionized water, obtains solution A, to
Ammonium hydroxide tune pH=9 is instilled in solution A, obtains mixed solution B；
2) the mixed solution B that step 1) obtains is put into the autoclave of 100mL polytetrafluoroethyllining lining, in baking oven
In 160 DEG C of reaction 14h, the obtained precipitating of reaction is filtered by vacuum, is washed with deionized 5 times, 70 DEG C in drying box
It is dried in vacuo 5h, obtains precursor powder；
3) precursor powder for obtaining step 2) is ground, and then 700 DEG C of calcining 2h in Muffle furnace, are air-cooled to room temperature,
Obtain carambola shape yttrium oxide powder.
Embodiment 3
The preparation method of the present embodiment yttrium oxide powder, comprising the following steps:
1) yttrium nitrate hexahydrate 5g is weighed, glycerine 12mL is added, then adds 42mL deionized water, obtains solution A, to
Ammonium hydroxide tune pH=10 is instilled in solution A, obtains mixed solution B；
2) the mixed solution B that step 1) obtains is put into the autoclave of 100mL polytetrafluoroethyllining lining, in baking oven
In 170 DEG C of reaction 16h, the obtained precipitating of reaction is filtered by vacuum, is washed with deionized 6 times, 60 DEG C in drying box
It is dried in vacuo 4h, obtains precursor powder；
3) precursor powder for obtaining step 2) is ground, and then 600 DEG C of calcining 2h in Muffle furnace, are air-cooled to room temperature,
Obtain carambola shape yttrium oxide powder.
Experimental example 1
XRD test is carried out to 1 gained yttrium oxide powder of embodiment, as a result as shown in Figure 1.As shown in Figure 1, X-ray diffraction
Figure is completely the same with Jade standard card (NO.43-1036), and the powder reacted is Y2O3。
Embodiment 2
SEM test is carried out to 1 gained yttrium oxide powder of embodiment, as a result as shown in Fig. 2, as shown in Figure 2, gained yttrium oxide
Powder is carambola shape, has groove structure, particle is uniform, large specific surface area.
Claims (5)
1. a kind of yttrium oxide powder, which is characterized in that be prepared by method comprising the following steps:
1) by yttrium nitrate, glycerine, water be uniformly mixed solution is made, then adjust pH to 8 ~ 10, then 160 ~ 170 DEG C react 14 ~
16h obtains reaction solution；
2) reaction solution obtained by step 1) is filtered, gained precipitating it is washed, dry precursor powder；
3) by 600 ~ 700 DEG C of 2 ~ 3h of calcining of precursor powder obtained by step 2 to obtain the final product；
Yttrium nitrate, glycerine, water are uniformly mixed to the specific steps that solution is made are as follows: third is first added into yttrium nitrate in step 1)
Triol adds water；
Every 5g yttrium nitrate is corresponding in step 1) is added 10 ~ 15mL glycerine and 40 ~ 45mL water；
PH is adjusted to use ammonium hydroxide in step 1).
2. yttrium oxide powder according to claim 1, which is characterized in that dry for 60 ~ 80 DEG C of vacuum drying 4 in step 2
~6h。
3. yttrium oxide powder according to claim 1, which is characterized in that it is characterized in that, its shape is carambola shape.
4. a kind of preparation method of yttrium oxide powder, which comprises the following steps: 1) mix yttrium nitrate, glycerine, water
Uniformly solution is made in conjunction, then adjusts pH to 8 ~ 10, then in 160 ~ 170 DEG C of 14 ~ 16h of reaction, obtain reaction solution；
2) reaction solution obtained by step 1) is filtered, gained precipitating it is washed, dry precursor powder；
3) by 600 ~ 700 DEG C of 2 ~ 3h of calcining of precursor powder obtained by step 2 to obtain the final product；
Yttrium nitrate, glycerine, water are uniformly mixed to the specific steps that solution is made are as follows: third is first added into yttrium nitrate in step 1)
Triol adds water；
Every 5g yttrium nitrate is corresponding in step 1) is added 10 ~ 15mL glycerine and 40 ~ 45mL water；
PH is adjusted to use ammonium hydroxide in step 1).
5. the preparation method according to claim 4, which is characterized in that in step 2 it is dry for 60 ~ 80 DEG C of vacuum drying 4 ~
6h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710427928.1A CN107021520B (en) | 2017-06-08 | 2017-06-08 | A kind of yttrium oxide powder and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710427928.1A CN107021520B (en) | 2017-06-08 | 2017-06-08 | A kind of yttrium oxide powder and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107021520A CN107021520A (en) | 2017-08-08 |
| CN107021520B true CN107021520B (en) | 2019-04-02 |
Family
ID=59531867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710427928.1A Active CN107021520B (en) | 2017-06-08 | 2017-06-08 | A kind of yttrium oxide powder and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107021520B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113772712A (en) * | 2020-07-29 | 2021-12-10 | 英迪那米(徐州)半导体科技有限公司 | Synthesis method of nano yttrium oxide powder |
| CN112194165A (en) * | 2020-10-09 | 2021-01-08 | 上海第二工业大学 | Yttrium oxide nanorod and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445354A (en) * | 2014-12-13 | 2015-03-25 | 广西科技大学 | Hydrothermal synthetic method of nano yttrium oxide powder |
-
2017
- 2017-06-08 CN CN201710427928.1A patent/CN107021520B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445354A (en) * | 2014-12-13 | 2015-03-25 | 广西科技大学 | Hydrothermal synthetic method of nano yttrium oxide powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107021520A (en) | 2017-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lee et al. | Microwave-hydrothermal versus conventional hydrothermal preparation of Ni-and Zn-ferrite powders | |
| CN101717122B (en) | Method for preparing ferroferric oxide nano-piece through microwave method | |
| Sai et al. | ZnFe 2 O 4: Rapid and sub-100 C synthesis and anneal-tuned magnetic properties | |
| Sadhana et al. | Effect of Sm 3+ on dielectric and magnetic properties of Y 3 Fe 5 O 12 nanoparticles | |
| CN108675336A (en) | The method that microwave cooperates with auxiliary liquid phase synthesis nanometer rare earth oxide ball with the double outfields of ultrasonic wave | |
| CN105668647A (en) | High-specific surface area perovskite nano-LaCoO3 porous hollow sphere material and preparation method thereof | |
| CN103447549A (en) | Preparation method of cobalt nanosphere | |
| CN108339562B (en) | Preparation method of iron ion doped carbon nitride nanotube and obtained product | |
| CN107021520B (en) | A kind of yttrium oxide powder and preparation method thereof | |
| Wang et al. | Microwave synthesis of homogeneous YAG nanopowder leading to a transparent ceramic | |
| Xu et al. | Calcination induced phase transformation in MnZn ferrite powders | |
| Liu et al. | Preparation of Cu–Zn ferrite photocatalyst and it's application | |
| Su et al. | Low temperature synthesis and characterization of YAG nanopowders by polyacrylamide gel method | |
| CN102557151B (en) | Method for preparing nanometer ferroferric oxide powder by reducing at one step | |
| Lian et al. | Template-free hydrothermal synthesis of Gd2O2SO4: Eu3+ hollow spheres based on urea-ammonium sulfate (UAS) system | |
| Yang et al. | Liquid–solid–solution synthesis of ultrafine Gd2Zr2O7 nanoparticles with yield enhancement | |
| CN109607620B (en) | Preparation method of Cu-Fe-Al-O nano-particle material | |
| Huang et al. | Synthesis of Fe-doped alumina transparent ceramics by co-precipitation and vacuum sintering | |
| CN102320659B (en) | Method for synthesizing lanthanum-vanadate nano material by adopting microwave-radiation method | |
| Li et al. | Ethanol-dependent solvothermal synthesis of monodispersed YAG powders with precursor obtained through bubbling ammonia | |
| Jiu et al. | Preparation and luminescent properties of hollow Y2O3: Tb3+ microspheres | |
| Li et al. | A general and facile method to prepare uniform gamma-alumina hollow microspheres from waste oil shale ash | |
| CN105923617B (en) | A kind of column magnetic hydroxylapatite nano material and preparation method thereof | |
| CN101648726B (en) | Hydrothermal synthesis method of LuO(OH) nanorods and Lu2O3 nanorods luminescent powder | |
| Zhang et al. | Controllable hydrothermal synthesis of star-shaped Sr3Fe2 (OH) 12 assemblies and their thermal decomposition and magnetic properties |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231225 Address after: 150400 Binxi economic and Technological Development Zone, Binxi Town, Binxian County, Harbin City, Heilongjiang Province Patentee after: Harbin Peize Material Technology Co.,Ltd. Address before: Room 2226, 22nd Floor, No. 66 Cuilong Street, Longquan Street, Longquanyi District, Chengdu City, Sichuan Province, 610100 Patentee before: Sichuan Panyingda Technology Co.,Ltd. Effective date of registration: 20231225 Address after: Room 2226, 22nd Floor, No. 66 Cuilong Street, Longquan Street, Longquanyi District, Chengdu City, Sichuan Province, 610100 Patentee after: Sichuan Panyingda Technology Co.,Ltd. Address before: 471003 No. 48, Xiyuan Road, Jianxi District, Henan, Luoyang Patentee before: HENAN University OF SCIENCE AND TECHNOLOGY |
|
| TR01 | Transfer of patent right |