07538672 is referenced by 29 patents and cites 85 patents.

An apparatus has a sensor with an electrically conductive ground member, electrically conductive first and second parts spaced from and proximate to each other and the ground member, and an insulator disposed between the ground member and the first and second parts. A different configuration involves a tag having circuitry, and a sensor supported on the tag and having electrically conductive first and second parts that are spaced from and proximate to each other, the first and second parts each being electrically coupled to the circuitry.

Title
Method and apparatus for capacitive sensing of door position
Application Number
11/336402
Publication Number
7538672 (B2)
Application Date
January 20, 2006
Publication Date
May 26, 2009
Inventor
David H Beauley
Sunnyvale
CA, US
Richard D Lockyer
Saratoga
CA, US
Agent
Haynes and Boone
Assignee
Savi Technology
CA, US
IPC
G08B 13/08
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