Company Badge
USPTO Data Jan 1 1976 - Oct 27 2026
2 Patents
#675 in Seattle, WA
#2,348 in Washington
#94,953 in US
Headsprout, Inc.
Forward Citations = 19
8 inventors:
Seattle, WA, United States of America
Headsprout, Inc.
Calculating rank
% 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:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Headsprout, Inc.. Retrieved from https://idiyas.com/company/headsprout
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]