This inventor holds 4 USPTO granted patents and 2 published patent applications. Top assignees: Gm Global Technolgoy Operations, Inc., Electro-Motive Diesel, Inc.. Active years: 1977-2005.
IDiyas Innovation Intelligence. (2026). Inventor Profile: John Ernst Madsen. Retrieved from https://idiyas.com/inventor/john-ernst-madsen
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Calculating rank
USPTO Granted Patents = 4 (Patent Applications = 2)
% Patents Active = 100.0
Average Co-Inventor Count = 2.2
ph-index = 4
Forward Citations = 85(Granted Patents)
Company Filing History:
3 out of 31,987 
Gm Global Technolgoy Operations, Inc.
1 out of 244 Electro-Motive Diesel, Inc.
Years Active: 1977-2005
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4 patents (USPTO):Explore Patents
Profile summary based on public USPTO records.
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]
2 patents pending:
IDiyas Innovation Intelligence. (2026). Inventor Profile: John Ernst Madsen. Retrieved from https://idiyas.com/inventor/john-ernst-madsen
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]
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]