Steve A Brough (1 out of 4 patents)
Tomasz W Malinowski (1 out of 1 patent)
Company Badge
USPTO Data Jan 1 1976 - Oct 20 2026
1 Patents
#5 in Granite City, IL
#6,197 in Illinois
#136,919 in US
Assf-Keystone, Inc.
Forward Citations = 5
2 inventors:
Granite City, IL, United States of America
Assf-Keystone, Inc.
Forward Citations = 5
Loading Chart...
Loading Chart...
2 inventors (with patents filed for the assignee):
1 patent:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Assf-Keystone, Inc.. Retrieved from https://idiyas.com/company/assf-keystone
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]