For the Inventor, By the Inventor

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Houston, TX, United States of America

Stewart & Stevenson Services, Inc.

USPTO Granted Patents = 23

Trademarks = 2

Forward Citations = 723

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31 inventors (with patents filed for the assignee):

Robert A Baten (7 out of 9 patents)

Bruce A Vicknair (6 out of 7 patents)

Greg L Cedillo (5 out of 6 patents)

4. Michael P Dearing (3 out of 7 patents)

5. Albert M Regan (2 out of 2 patents)

6. Joseph L LeMoine (2 out of 2 patents)

7. Mark H Axford (2 out of 2 patents)

8. James K Prochaska (2 out of 2 patents)

9. William L Anderson, Jr (2 out of 5 patents)

10. Frank C South, Jr (2 out of 2 patents)

11. Thomas A Robertson (2 out of 2 patents)

12. Randall R Price (2 out of 4 patents)

13. John Howard Craig (2 out of 2 patents)

14. Dennis D George (1 out of 1 patent)

15. Richard A Olson (1 out of 12 patents)

23 patents: Sort by Forward Citations

1. 6450262 - Riser isolation tool (2002-09-17),

2. 6123151 - Valve for use in a subsea drilling riser (2000-09-26),

3. 6089526 - Ram type blowout preventor (2000-07-18),

4. 6014855 - Light hydrocarbon fuel cooling system for gas turbine (2000-01-18),

5. 6012547 - Cargo loader with quick-release lift-assisted handrail (2000-01-11),

6. 5841357 - Battery electrolyte monitor (1998-11-24),

7. 5775803 - Automatic cementing system with improved density control (1998-07-07),

8. 5624182 - Automatic cementing system with improved density control (1997-04-29),

9. 5515916 - Blowout preventer (1996-05-14),

10. 5503473 - Automatic cementing system for precisely obtaining a desired cement (1996-04-02),

11. 5441340 - Method for controlling the density of a well fracturing slurry (1995-08-15),

12. 5322410 - Tube bundle extractor (1994-06-21),

13. 5281023 - Method and apparatus for automatically controlling a well fracturing (1994-01-25),

14. 5188174 - Apparatus for inserting and withdrawing coil tubing into a well (1993-02-23),

15. 5184064 - Encapsulated meter with optical programmer (1993-02-02),

Company Overview

Stewart & Stevenson Services, Inc. is a prominent provider of specialized equipment and services, primarily focusing on the energy and industrial sectors. The company develops and manufactures a diverse range of products, including power generation systems, oilfield equipment, and military vehicles. With a strong emphasis on innovation, Stewart & Stevenson leverages advanced engineering and technology to meet the evolving needs of its clients, particularly in the United States and international markets.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

23 Patents

#233 in Houston, TX

#851 in Texas

#14,438 in US

#27,714 in the World

Houston, TX, United States of America

Stewart & Stevenson Services, Inc.

Forward Citations = 723

31 inventors:

Robert A Baten (7 out of 9 patents)

Bruce A Vicknair (6 out of 7 patents)

Greg L Cedillo (5 out of 6 patents)

4. Michael P Dearing (3 out of 7 patents)

5. Albert M Regan (2 out of 2 patents)

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

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]

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