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For the Inventor, By the Inventor

San Francisco, CA, United States of America

Cognisign LLC


USPTO Granted Patents = 1

% Expired Patents = 100.0

Forward Citations = 4

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1 inventor (with patents filed for the assignee):

goldMedal Leonid Kontsevich (1 out of 13 patents)


1 patent:

1. 7489804 - Apparatus and method for trajectory-based identification of digital data content (2009-02-10),
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USPTO Data Jan 1 1976 - Sep 22 2026

1 Patents

#1,797 in San Francisco, CA

#28,998 in California

#136,577 in US

San Francisco, CA (US)
San Francisco, CA, United States of America

Cognisign LLC

Forward Citations = 4

1 inventor:

goldMedal Leonid Kontsevich (1 out of 13 patents)

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