Company Badge
USPTO Data Jan 1 1976 - Oct 20 2026
6 Patents
#54 in Costa Mesa, CA
#10,578 in California
#45,007 in US
Duffield Marine, Inc.
Forward Citations = 24
3 inventors:
Costa Mesa, CA, United States of America
Duffield Marine, Inc.
% Expired Patents = 16.7
Trademarks = 1
Forward Citations = 24
Loading Chart...
Loading Chart...
3 inventors (with patents filed for the assignee):
Marshall Duffield (5 out of 9 patents)
Arthur J Heiser, Jr (1 out of 1 patent)
James F Calvagna (1 out of 2 patents)
6 patents:
Company Overview
Duffield Marine, Inc. is a leading marine engineering company specializing in the design and construction of high-performance boats and yachts. With over 30 years of experience, they provide innovative solutions for the maritime industry, ensuring top-quality vessels for their clients worldwide.
Profile summary synthesized from public USPTO records and patent filings.
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Duffield Marine, Inc.. Retrieved from https://idiyas.com/company/duffield-marine
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]