Chi Yin Alan LEUNG

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Kowloon Bay, CN

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Patents Grantslast 30 patents

Information Patent Grant
Light string system
- Patent number 8,235,737
- Issue date Aug 7, 2012
- Polygroup Macau Limited (BVI)
- Chung Wai (Paul) Cheng
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
LIGHT STRING SYSTEM
- Publication number 20120286642
- Publication date Nov 15, 2012
- POLYGROUP MACAU LIMITED (BVI)
- Chung Wai (Paul) Cheng
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Light String System
- Publication number 20110136361
- Publication date Jun 9, 2011
- POLYGROUP MACAU LIMITED (BVI)
- Chung Wai (Paul) Cheng
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
CLEANING SYSTEMS AND METHODS FOR CLEANING CONTAINERS HAVING NON-VER...
- Publication number 20110000838
- Publication date Jan 6, 2011
- Cindex Holdings Limited (a Hong Kong corporation)
- Gary Lee Lawson
- E04 - BUILDING
Information Patent Application
POOL LADDER SAFETY SYSTEM
- Publication number 20100170749
- Publication date Jul 8, 2010
- Chi Yin Alan LEUNG
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS