Trademarks = 1

Forward Citations = 89

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2 inventors (with patents filed for the assignee):

Christopher J Nagel (1 out of 62 patents)

Stanley L Marquiss (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 7704403 - Composition of matter tailoring: system I (2010-04-27),

2. 4385210 - Electro-acoustic planar transducer (1983-05-24),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#2 in Carmichael, CA

#21,017 in California

#94,905 in US

Carmichael, CA, United States of America

Electro-Magnetic Corporation

Forward Citations = 89

2 inventors:

Christopher J Nagel (1 out of 62 patents)

Stanley L Marquiss (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Electro-Magnetic Corporation. Retrieved from https://idiyas.com/company/electro-magnetic

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]