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USPTO Data Jan 1 1976 - Oct 20 2026
2 Patents
#1 in West Glamorgan
#6,532 in United Kingdom
Qual-Chem Limited
Forward Citations = 11
4 inventors:
West Glamorgan, United Kingdom
Qual-Chem Limited
% Expired Patents = 50.0
Trademarks = 41
Forward Citations = 11
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4 inventors (with patents filed for the assignee):
Keith Harris (1 out of 1 patent)
Stephen David Bray (1 out of 1 patent)
Mahesh C Jha (1 out of 1 patent)
4. William A May (1 out of 5 patents)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Qual-Chem Limited. Retrieved from https://idiyas.com/company/qual-chem
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]