Stewart & Stevenson Oiltools, Inc.

Calculating rank

USPTO Granted Patents = 2

Forward Citations = 63

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6 inventors (with patents filed for the assignee):

David P Herd (1 out of 11 patents)

Jack Whiteman (1 out of 3 patents)

Terry W Pollard (1 out of 1 patent)

4. Bill M Brock, Jr (1 out of 2 patents)

5. Leo Jude Marquette (1 out of 1 patent)

6. Norman A Nelson (1 out of 9 patents)

2 patents: Sort by Forward Citations

1. 3993100 - Hydraulic control system for controlling a plurality of underwater (1976-11-23),

2. 3974690 - Method of and apparatus for measuring annulus pressure in a well (1976-08-17),

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USPTO Data Jan 1 1976 - Oct 27 2026

2 Patents

#1,543 in Houston, TX

#6,310 in Texas

#94,953 in US

Houston, TX, United States of America

Stewart & Stevenson Oiltools, Inc.

Forward Citations = 63

6 inventors:

David P Herd (1 out of 11 patents)

Jack Whiteman (1 out of 3 patents)

Terry W Pollard (1 out of 1 patent)

4. Bill M Brock, Jr (1 out of 2 patents)

5. Leo Jude Marquette (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Stewart & Stevenson Oiltools, Inc.. Retrieved from https://idiyas.com/company/stewart-and-stevenson-oiltools

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]