Company Badge
USPTO Data Jan 1 1976 - Oct 6 2026
2 Patents
#673 in Seattle, WA
#2,342 in Washington
#94,782 in US
Headsprout, Inc.
Forward Citations = 19
8 inventors:
Seattle, WA, United States of America
Headsprout, Inc.
% Expired Patents = 50.0
Forward Citations = 19
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8 inventors (with patents filed for the assignee):
Terrence Layng (2 out of 3 patents)
Gregory Stikeleather (2 out of 8 patents)
Victoria Ford (2 out of 2 patents)
4. Michael P Layng (2 out of 2 patents)
5. Marilyn R Gilbert (2 out of 2 patents)
6. Kent R Johnson (2 out of 2 patents)
7. Janet S Iwyman (1 out of 1 patent)
8. Janet S Twyman (1 out of 1 patent)
2 patents:
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Please report any incorrect information to [email protected]
Please report any incorrect information to [email protected]