David S Stone (2 out of 3 patents)
Company Badge
USPTO Data Jan 1 1976 - Oct 6 2026
2 Patents
#6 in Wareham, MA
#4,925 in Massachusetts
#94,782 in US
Lightspan, LLC
Forward Citations = 5
1 inventor:
Wareham, MA, United States of America
Lightspan, LLC
% Expired Patents = 100.0
Forward Citations = 5
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1 inventor (with patents filed for the assignee):
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Lightspan, LLC. Retrieved from https://idiyas.com/company/lightspan
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]