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For the Inventor, By the Inventor

Menlo Park, CA, United States of America

Persephone, Inc.


USPTO Granted Patents = 2

% Expired Patents = 100.0

Forward Citations = 163

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2 inventors (with patents filed for the assignee):

goldMedal Benjamin Theodore Nordell, Ii (2 out of 12 patents)

silverMedal Peter Seth Edelstein (2 out of 16 patents)


2 patents:

1. 7525426 - Method and apparatus for location and tracking persons (2009-04-28),
2. 7102508 - Method and apparatus for locating and tracking persons (2006-09-05),
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USPTO Data Jan 1 1976 - Sep 15 2026

2 Patents

#344 in Menlo Park, CA

#20,971 in California

#94,722 in US

Menlo Park, CA (US)
Menlo Park, CA, United States of America

Persephone, Inc.

Forward Citations = 163

2 inventors:

goldMedal Benjamin Theodore Nordell, Ii (2 out of 12 patents)

silverMedal Peter Seth Edelstein (2 out of 16 patents)

Please report any incorrect information to [email protected]
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