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USPTO Data Jan 1 1976 - Oct 20 2026
2 Patents
#56 in Lake Forest, IL
#4,391 in Illinois
#94,905 in US
Cygnet Hill Ltd.
Forward Citations = 4
4 inventors:
Lake Forest, IL, United States of America
Cygnet Hill Ltd.
% Expired Patents = 100.0
EPO Patents = 1
Trademarks = 1
Forward Citations = 4
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4 inventors (with patents filed for the assignee):
Marianne Grisdale (2 out of 28 patents)
Siarhei Murauyou (2 out of 18 patents)
Sarah Yarger Kienzle (2 out of 2 patents)
4. Cliff Krapfl (2 out of 2 patents)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Cygnet Hill Ltd.. Retrieved from https://idiyas.com/company/cygnet-hill
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]
1 patent (EPO):
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]