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For the Inventor, By the Inventor

St. Clair Shores, MI, United States of America

Keith D Marsh

This inventor holds 8 USPTO granted patents. Top assignees: Colt Industries Operating Corporation, Borgwarner Inc., Colt Industries Inc.. Active years: 1978-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keith D Marsh. Retrieved from https://idiyas.com/inventor/keith-d-marsh

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 2.1

ph-index = 6

Forward Citations = 199(Granted Patents)


Company Filing History:

goldMedal5 out of 153 
 
Colt Industries Operating Corporation
 patents
silverMedal1 out of 2,730 
 
Borgwarner Inc.
 patents
bronzeMedal1 out of 49 
 
Colt Industries Inc.
 patents
4. 1 out of 71 
 
Coltec Industries, Inc.
 patents

Years Active: 1978-2001

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8 patents (USPTO):Explore Patents
1. 6178956 - Automotive fluid control system with pressure balanced solenoid valve (2001-01-30),
2. 5419369 - Solenoid operated pressure control valve (1995-05-30),
3. 4917150 - Solenoid operated pressure control valve (1990-04-17),
4. 4483508 - Gradient power valve assembly (1984-11-20),
5. 4434763 - Apparatus and system for controlling the air-fuel ratio supplied to a (1984-03-06),
6. 4294282 - Apparatus and system for controlling the air-fuel ratio supplied to a (1981-10-13),
7. 4154782 - Altitude fuel control valve (1979-05-15),
8. 4086900 - Variable position throttle stop and dashpot apparatus (1978-05-02),

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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]
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