For the Inventor, By the Inventor

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Santa Clara, CA, United States of America

Dryden Engineering Co., Inc.

USPTO Granted Patents = 2

Forward Citations = 32

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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),

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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#780 in Santa Clara, CA

#20,531 in California

#92,554 in US

Santa Clara, CA, United States of America

Dryden Engineering Co., Inc.

Forward Citations = 32

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)

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