US20150000863A1 - Moisture and/or heat exchange device - Google Patents

Moisture and/or heat exchange device Download PDF

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Publication number
US20150000863A1
US20150000863A1 US14/378,033 US201314378033A US2015000863A1 US 20150000863 A1 US20150000863 A1 US 20150000863A1 US 201314378033 A US201314378033 A US 201314378033A US 2015000863 A1 US2015000863 A1 US 2015000863A1
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US
United States
Prior art keywords
moisture
heat
coating
heat exchanger
nano
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.)
Abandoned
Application number
US14/378,033
Inventor
Hans Klingenburg
Kai Klingernburg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Klingenburg GmbH
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Assigned to KLINGENBURG GMBH reassignment KLINGENBURG GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KLINGENBURG, HANS, KLINGENBURG, KAI
Publication of US20150000863A1 publication Critical patent/US20150000863A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28004—Sorbent size or size distribution, e.g. particle size
    • B01J20/28007—Sorbent size or size distribution, e.g. particle size with size in the range 1-100 nanometers, e.g. nanosized particles, nanofibers, nanotubes, nanowires or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/2803—Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3214—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the method for obtaining this coating or impregnating
    • B01J20/3223—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the method for obtaining this coating or impregnating by means of an adhesive agent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3234—Inorganic material layers
    • B01J20/3238—Inorganic material layers containing any type of zeolite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • F28F13/185—Heat-exchange surfaces provided with microstructures or with porous coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1032—Desiccant wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1032—Desiccant wheel
    • F24F2203/1036—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
    • F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
    • F28D19/041—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier with axial flow through the intermediate heat-transfer medium
    • F28D19/042—Rotors; Assemblies of heat absorbing masses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the invention relates to a moisture and/or heat exchanger, e.g. a plate heat exchanger, a sorption rotor, an adsorption dehumidification rotor or similar, having moisture or heat-exchange surfaces by means of which moisture and/or heat can be introduced into a fluid flow and/or removed from a fluid flow and/or is exchangeable between fluid flows, and a coating with which the moisture or heat exchange surfaces are coated and that contains a binding agent and a nano-zeolite with a particle size ⁇ 1000 nm.
  • a moisture and/or heat exchanger e.g. a plate heat exchanger, a sorption rotor, an adsorption dehumidification rotor or similar, having moisture or heat-exchange surfaces by means of which moisture and/or heat can be introduced into a fluid flow and/or removed from a fluid flow and/or is exchangeable between fluid flows, and a coating with which the moisture or heat exchange surfaces are coated and that contains a binding agent and a nano-zeo
  • the problem addressed by the invention is that of developing the generic moisture and/or heat exchanger in such a manner that on the one hand the process of coating its moisture and heat exchange surfaces with the coating containing nano-zeolite is made easier and that on the other hand permanent adhesion of the coating applied can be guaranteed.
  • the binding agent by means of which the nano-zeolite is attached to the base surface is a polyurethane resin.
  • the nano-zeolite In order to avoid the transfer of odorous substances or similar, it is advantageous for the nano-zeolite to have a homogeneous pore size distribution with a pore diameter ⁇ 1.5 nm, preferably 0.4 nm and/or 0.3 nm.
  • the particles of nano-zeolite may advantageously exist in nano-crystalline form.
  • the thickness of the coating may lie between 0.2 and 100 or 1 and 20 or 10 and 20 ⁇ m (10 ⁇ 6 m), depending on the requirement profile.
  • Aluminum, any other suitable metallic or ceramic material, plastic or paper are suitable for use as the material for the embodiment of the moisture or heat exchange surfaces.
  • the coating of the nano-zeolite and the binding agent is applied to an unprimed Aluminum surface or one that has not undergone holding primer-forming measures, in particular to an uncleaned and unpretreated aluminum surface.
  • the binding agent or polyurethane resin is preferably a polyester-based polyurethane resin.
  • a plate heat exchanger, a sorption rotor, an adsorption dehumidification rotor or similar has moisture or heat exchange surfaces that are flat, corrugated or structured in another suitable manner.
  • these surfaces are coated, namely with a coating that contains a nano-zeolite in addition to a binding agent.
  • This nano-zeolite has a particle size ⁇ 1000 nm and a homogeneous pore size distribution with a pore diameter that is below 1.5 nm, preferably around 0.4 nm or 0.3 nm.
  • the binding agent in the form of a 40% by wt. aqueous dispersion of a polyester-based polyurethane resin containing the nano-zeolite is applied to the moisture or heat exchange surfaces and hardened.
  • the thickness of the coating is between 0.2 and 100 ⁇ m, e.g. between 10 and 20 ⁇ m, depending on the requirement profile.
  • the moisture and heat exchange surfaces may be formed by aluminum.
  • the coating described above is applied to the aluminum without the surface of the aluminum undergoing adhesion-forming measures beforehand. It is even possible for the coating described above to be applied to an uncleaned and un-pretreated aluminum surface.
  • the coating composed in this manner is suitable for adhering fixedly in the long term. It is permanently dependable. The cost of applying it is comparatively low, as the base surface of the coating does not need to be pretreated or primed.

Abstract

A moisture and/or heat exchange device, for example a plate heat exchanger, a sorption rotor, adsorption dehumidifying rotor or the like, has moisture or heat exchange surfaces, by means of which moisture and/or heat can be introduced into a stream of fluid and/or can be extracted from a stream of fluid and/or can be exchanged between streams of fluid, and a coating, with which the moisture or heat exchange surfaces are coated and which contains a binder and a nano zeolite with a particle size of <1000 nm. In order to ensure permanent attachment of the applied coating, it is proposed that the binder is a polyurethane resin.

Description

  • The invention relates to a moisture and/or heat exchanger, e.g. a plate heat exchanger, a sorption rotor, an adsorption dehumidification rotor or similar, having moisture or heat-exchange surfaces by means of which moisture and/or heat can be introduced into a fluid flow and/or removed from a fluid flow and/or is exchangeable between fluid flows, and a coating with which the moisture or heat exchange surfaces are coated and that contains a binding agent and a nano-zeolite with a particle size<1000 nm.
  • It is known from the state of the art for exchange surfaces of this kind to be provided with a coating of nano-zeolite, in order to increase the efficiency of moisture and/or heat exchangers of this kind and in order to ensure permanently reliable operation of such devices.
  • Problems arose during the operation of moisture and/or heat exchangers of this kind, insofar as permanent adhesion of the coating containing the nano-zeolite to the base surfaces could often not be guaranteed. Moreover, difficulties frequently arose during the coating process itself.
  • Starting from the state of the art described above, the problem addressed by the invention is that of developing the generic moisture and/or heat exchanger in such a manner that on the one hand the process of coating its moisture and heat exchange surfaces with the coating containing nano-zeolite is made easier and that on the other hand permanent adhesion of the coating applied can be guaranteed.
  • This problem is solved according to the invention in that the binding agent by means of which the nano-zeolite is attached to the base surface is a polyurethane resin.
  • During the use of this binding agent, a substantially simpler application of the coating has resulted compared with the state of the art, wherein, moreover, the adhesion of the coating applied to the base surface can be reliably guaranteed for a long period of time.
  • In order to avoid the transfer of odorous substances or similar, it is advantageous for the nano-zeolite to have a homogeneous pore size distribution with a pore diameter<1.5 nm, preferably 0.4 nm and/or 0.3 nm.
  • The particles of nano-zeolite may advantageously exist in nano-crystalline form.
  • The thickness of the coating may lie between 0.2 and 100 or 1 and 20 or 10 and 20 μm (10−6 m), depending on the requirement profile.
  • Aluminum, any other suitable metallic or ceramic material, plastic or paper are suitable for use as the material for the embodiment of the moisture or heat exchange surfaces.
  • According to an advantageous embodiment of the invention, the coating of the nano-zeolite and the binding agent is applied to an unprimed Aluminum surface or one that has not undergone holding primer-forming measures, in particular to an uncleaned and unpretreated aluminum surface.
  • The binding agent or polyurethane resin is preferably a polyester-based polyurethane resin.
  • The invention is explained in greater detail below with the help of an embodiment.
  • A plate heat exchanger, a sorption rotor, an adsorption dehumidification rotor or similar has moisture or heat exchange surfaces that are flat, corrugated or structured in another suitable manner.
  • In the case of the moisture and/or heat exchanger according to the invention, these surfaces are coated, namely with a coating that contains a nano-zeolite in addition to a binding agent. This nano-zeolite has a particle size<1000 nm and a homogeneous pore size distribution with a pore diameter that is below 1.5 nm, preferably around 0.4 nm or 0.3 nm. In the case of the moisture and/or heat exchanging device according to the invention, the binding agent in the form of a 40% by wt. aqueous dispersion of a polyester-based polyurethane resin containing the nano-zeolite is applied to the moisture or heat exchange surfaces and hardened.
  • The thickness of the coating is between 0.2 and 100 μm, e.g. between 10 and 20 μm, depending on the requirement profile.
  • The moisture and heat exchange surfaces may be formed by aluminum. The coating described above is applied to the aluminum without the surface of the aluminum undergoing adhesion-forming measures beforehand. It is even possible for the coating described above to be applied to an uncleaned and un-pretreated aluminum surface.
  • The coating composed in this manner is suitable for adhering fixedly in the long term. It is permanently dependable. The cost of applying it is comparatively low, as the base surface of the coating does not need to be pretreated or primed.

Claims (7)

1. a plate-type moisture or heat exchanger, a sorption rotor, or an adsorption dehumidification rotor, having moisture or heat-exchange surfaces that can transfer moisture or heat into a fluid flow or extract moisture or heat from a fluid stream or transfer moisture or heat between fluid streams, a coating on the moisture or heat exchange surfaces and that contains polyurethane resin as a binding agent and nano-zeolite particles with a particle size<1000 nm.
2. The moisture or heat exchanger according to claim 1, wherein the coating of nano-zeolite particles in polyurethane has a homogeneous pore size distribution with a pore diameter<1.5 nm.
3. The moisture or heat exchanger according to claim 1, wherein the particles of nano-zeolite are in nano-crystalline form.
4. The moisture or heat exchanger according to claim 1, wherein the thickness of the coating is between 0.2 and 100.
5. The moisture or heat exchanger according to claim 1, wherein the moisture or heat exchange surfaces are made of aluminum, other suitable metallic or ceramic materials, plastics or paper.
6. The moisture or heat exchanger according to claim 1, wherein the coating of the nano-zeolite and the polyurethane resin is applied to an unprimed aluminum surface or one that has not undergone holding primer-forming measures.
7. The moisture or heat exchanger according to claim 1, wherein the binding agent is a polyester-based polyurethane resin.
US14/378,033 2012-03-15 2013-01-10 Moisture and/or heat exchange device Abandoned US20150000863A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202012002693U DE202012002693U1 (en) 2012-03-15 2012-03-15 Moisture and / or heat exchange device
DE202012002693.3 2012-03-15
PCT/EP2013/000059 WO2013135328A1 (en) 2012-03-15 2013-01-11 Moisture and/or heat exchange device

Publications (1)

Publication Number Publication Date
US20150000863A1 true US20150000863A1 (en) 2015-01-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US14/378,033 Abandoned US20150000863A1 (en) 2012-03-15 2013-01-10 Moisture and/or heat exchange device

Country Status (5)

Country Link
US (1) US20150000863A1 (en)
EP (1) EP2825834B1 (en)
CA (1) CA2864681A1 (en)
DE (1) DE202012002693U1 (en)
WO (1) WO2013135328A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140033924A1 (en) * 2011-02-09 2014-02-06 Kai Klingenburg Heat and/or moisture exchange element
US10012450B2 (en) 2012-01-20 2018-07-03 Westwind Limited Heat exchanger element and method for the production
US10415900B2 (en) 2013-07-19 2019-09-17 Westwind Limited Heat / enthalpy exchanger element and method for the production

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4869954A (en) * 1987-09-10 1989-09-26 Chomerics, Inc. Thermally conductive materials
US5616388A (en) * 1994-03-11 1997-04-01 Kansai Paint Company, Ltd. Water repellent coating
US6337129B1 (en) * 1997-06-02 2002-01-08 Toto Ltd. Antifouling member and antifouling coating composition
US20080308262A1 (en) * 2005-01-26 2008-12-18 Klingenburg Gmbh Humidity and/or Heat-Exchange Device
US20100139901A1 (en) * 2007-05-02 2010-06-10 Mitsubishi Electric Corporation Heat exchanger element and heat exchanger
US20120114957A1 (en) * 2009-03-31 2012-05-10 Jfe Steel Corporation Surface-treatment agent, method for producing coated steel sheet using the surface-treatment agent, and coated steel sheet

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4769053A (en) * 1987-03-26 1988-09-06 Semco Mfg., Inc. High efficiency sensible and latent heat exchange media with selected transfer for a total energy recovery wheel
DE102009003560B4 (en) * 2009-03-03 2015-01-22 Hydro Aluminium Deutschland Gmbh Process for producing a sorbent coated aluminum strip, sorbent coated aluminum strip and its use

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4869954A (en) * 1987-09-10 1989-09-26 Chomerics, Inc. Thermally conductive materials
US5616388A (en) * 1994-03-11 1997-04-01 Kansai Paint Company, Ltd. Water repellent coating
US6337129B1 (en) * 1997-06-02 2002-01-08 Toto Ltd. Antifouling member and antifouling coating composition
US20080308262A1 (en) * 2005-01-26 2008-12-18 Klingenburg Gmbh Humidity and/or Heat-Exchange Device
US20100139901A1 (en) * 2007-05-02 2010-06-10 Mitsubishi Electric Corporation Heat exchanger element and heat exchanger
US20120114957A1 (en) * 2009-03-31 2012-05-10 Jfe Steel Corporation Surface-treatment agent, method for producing coated steel sheet using the surface-treatment agent, and coated steel sheet

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140033924A1 (en) * 2011-02-09 2014-02-06 Kai Klingenburg Heat and/or moisture exchange element
US10012450B2 (en) 2012-01-20 2018-07-03 Westwind Limited Heat exchanger element and method for the production
US10415900B2 (en) 2013-07-19 2019-09-17 Westwind Limited Heat / enthalpy exchanger element and method for the production

Also Published As

Publication number Publication date
DE202012002693U1 (en) 2013-06-18
CA2864681A1 (en) 2013-09-19
EP2825834B1 (en) 2016-03-23
WO2013135328A1 (en) 2013-09-19
EP2825834A1 (en) 2015-01-21

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AS Assignment

Owner name: KLINGENBURG GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KLINGENBURG, HANS;KLINGENBURG, KAI;REEL/FRAME:033551/0524

Effective date: 20140813

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION