Company Badge
USPTO Data Jan 1 1976 - Oct 27 2026
10 Patents
#96 in Charlotte, NC
#621 in North Carolina
#29,892 in US
#56,119 in the World
Duff-Norton Company, Inc.
Forward Citations = 135
11 inventors:
Charlotte, NC, United States of America
Duff-Norton Company, Inc.
Calculating rank
Trademarks = 2
Forward Citations = 135
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11 inventors (with patents filed for the assignee):
George R Ferguson (3 out of 4 patents)
Eckart F Schultze (1 out of 4 patents)
Ralph R Barber (1 out of 4 patents)
4. Martin A Opyrchal (1 out of 1 patent)
5. John D Christensen (1 out of 1 patent)
6. James C Johnson (1 out of 1 patent)
7. William W Royer (1 out of 1 patent)
8. John P Rollins (1 out of 1 patent)
9. James C Lucas (1 out of 1 patent)
10. Robert P Harbage (1 out of 1 patent)
11. Albert L Leffler, Jr (1 out of 1 patent)
10 patents:
Company Overview
Duff-Norton Company, Inc. is a prominent manufacturer specializing in lifting, positioning, and controlling technologies. Based in Charlotte, North Carolina, the company develops a diverse range of products, including screw jacks, actuators, and custom-engineered solutions tailored to various industries. With a strong focus on innovation, Duff-Norton leverages advanced engineering techniques to enhance operational efficiency and safety in applications such as material handling, aerospace, and manufacturing. Their commitment to quality and performance positions them as a trusted partner in the field.
Profile summary synthesized from public USPTO records and patent filings.
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Duff-Norton Company, Inc.. Retrieved from https://idiyas.com/company/duff-norton-company
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]