William Kwan

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London, CA

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Patents Grantslast 30 patents

Information Patent Grant
Planar plate core and method of assembly
- Patent number 10,208,979
- Issue date Feb 19, 2019
- AIRIA LEASING INC.
- Peter Karl Grinbergs
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Flat plate heat and moisture exchanger
- Patent number 8,235,093
- Issue date Aug 7, 2012
- Nutech R. Holdings Inc.
- Peter Karl Grinbergs
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Adjustable flow heat recovery ventilator and method
- Patent number 7,007,740
- Issue date Mar 7, 2006
- Nutech R. Hldgs Inc.
- Peter Karl Grinbergs
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
PLANAR PLATE CORE AND METHOD OF ASSEMBLY
- Publication number 20170023273
- Publication date Jan 26, 2017
- Airia Leasing inc.
- Peter Karl GRINBERGS
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Application
PLANAR PLATE CORE AND METHOD OF ASSEMBLY
- Publication number 20140076527
- Publication date Mar 20, 2014
- Airia Leasing inc.
- Peter Karl GRINBERGS
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
FLAT PLATE HEAT AND MOISTURE EXCHANGER
- Publication number 20090314480
- Publication date Dec 24, 2009
- Peter Karl Grinbergs
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Application
Adjustable flow heat recovery ventilator and method
- Publication number 20040140080
- Publication date Jul 22, 2004
- Peter Karl Grinbergs
- F24 - HEATING RANGES VENTILATING