Forward Citations = 33

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4 inventors (with patents filed for the assignee):

Donald G Lutz (2 out of 4 patents)

Richard S Dryden (2 out of 2 patents)

Gene J Sullivan (2 out of 2 patents)

4. Robert H Swick (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 5526805 - In-line silencer for clean room breathing apparatus (1996-06-18),

2. 5253538 - Method and device for quantifying particles on a surface (1993-10-19),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

2 Patents

#740 in Santa Clara, CA

#21,008 in California

#94,841 in US

Santa Clara, CA, United States of America

Dryden Engineering Co., Inc.

Forward Citations = 33

4 inventors:

Donald G Lutz (2 out of 4 patents)

Richard S Dryden (2 out of 2 patents)

Gene J Sullivan (2 out of 2 patents)

4. Robert H Swick (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Dryden Engineering Co., Inc.. Retrieved from https://idiyas.com/company/dryden-engineering-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]