John Se-Kit Yuen

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Kowloon, HK

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Patents Grantslast 30 patents

Information Patent Grant
Drink-item holding apparatus and a portable cooler box incorporatin...
- Patent number 7,458,481
- Issue date Dec 2, 2008
- John Manufacturing Limited
- John Se-Kit Yuen
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Photo-electronic air purifying disinfector
- Patent number 7,364,605
- Issue date Apr 29, 2008
- John Manufacturing Limited
- John Se-Kit Yuen
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Photo-electronic air purifying and conditioning system
- Patent number 7,273,515
- Issue date Sep 25, 2007
- John Manufacturing Limited
- John Se-Kit Yuen
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Photo-electronic air purifying and disinfecting system
- Patent number 7,270,696
- Issue date Sep 18, 2007
- John Manufacturing Limited
- John Se-Kit Yuen
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Photo-electronic air conditioning, dehumidifying, purifying and dis...
- Patent number 7,264,657
- Issue date Sep 4, 2007
- John Manufacturing Limited
- John Se-Kit Yuen
- F24 - HEATING RANGES VENTILATING