William Chen

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Queens, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Barrier movement position sensing
- Patent number 6,842,112
- Issue date Jan 11, 2005
- The Chamberlain Group, Inc.
- Derek Pulis
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Movable barrier operator having cable tension sensor and door lock...
- Patent number 6,782,662
- Issue date Aug 31, 2004
- The Chamberlain Group, Inc.
- Phillip McCartney
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
BARRIER ARM OPERATOR
- Publication number 20240328101
- Publication date Oct 3, 2024
- The Chamberlain Group LLC
- WILLIAM CHEN
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Application
Barrier movement position sensing
- Publication number 20040124992
- Publication date Jul 1, 2004
- The Chamberlain Group, Inc.
- Derek Pulis
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Movable barrier operator having cable tension sensor and door lock...
- Publication number 20020184824
- Publication date Dec 12, 2002
- The Chamberlain Group, Inc.
- Phillip McCartney
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES