For the Inventor, By the Inventor

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Hong Kong, China

Signal Communications Limited

USPTO Granted Patents = 3

% Expired Patents = 33.3

CIPO Patents = 1

EPO Patents = 1

Trademarks = 1

Forward Citations = 26

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4 inventors (with patents filed for the assignee):

James R Hendershot (2 out of 4 patents)

Ka Ho Ho (1 out of 22 patents)

Ching Hok Tse (1 out of 1 patent)

4. Ka Chun Lu (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 8976262 - Methods of connecting network-based cameras to video stations, and corresponding video surveillance systems, video stations, and network-based cameras (2015-03-10),

2. 4903323 - Call box (1990-02-20),

3. 4817126 - Call box (1989-03-28),

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USPTO Data Jan 1 1976 - Sep 29 2026

3 Patents

#934 in Hong Kong

#8,271 in China

Hong Kong, China

Signal Communications Limited

Forward Citations = 26

4 inventors:

James R Hendershot (2 out of 4 patents)

Ka Ho Ho (1 out of 22 patents)

Ching Hok Tse (1 out of 1 patent)

4. Ka Chun Lu (1 out of 1 patent)

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