For the Inventor, By the Inventor

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The Woodlands, TX, United States of America

Tejas Research + Engineering, LLC

USPTO Granted Patents = 26

% Expired Patents = 23.1

EPO Patents = 1

Forward Citations = 121

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9 inventors (with patents filed for the assignee):

Thomas G Hill, Jr (21 out of 34 patents)

Robert C Henschel, Jr (11 out of 14 patents)

Jason Charles Mailand (11 out of 39 patents)

4. Shane W Pfaff (3 out of 4 patents)

5. Rory L Hodge (3 out of 4 patents)

6. Case Nienhuis (1 out of 2 patents)

7. Sam Herod (1 out of 1 patent)

8. Robert A Jancha (1 out of 1 patent)

9. Robert Henschel (1 out of 1 patent)

26 patents: Sort by Forward Citations

1. 10920529 - Surface controlled wireline retrievable safety valve (2021-02-16),

2. 10704361 - Method and apparatus for injecting fluid into spaced injection zones in an oil/gas well (2020-07-07),

3. 10458203 - Pressure cycle actuated injection valve (2019-10-29),

4. 10378312 - Tubing retrievable injection valve assembly (2019-08-13),

5. 10309201 - Method, apparatus, and system for injecting chemicals into lower tertiary wells (2019-06-04),

6. 10309175 - High flow downhole lock (2019-06-04),

7. 10294755 - Dual barrier injection valve with a variable orifice (2019-05-21),

8. 10267099 - Isolation sleeve for downhole equipment (2019-04-23),

9. 10119375 - Method, apparatus, and system for injecting chemicals into lower tertiary wells (2018-11-06),

10. 10100611 - Deep set subsurface safety valve with a micro piston latching mechanism (2018-10-16),

11. 10053936 - Thermal compensating tubing anchor for a pumpjack well (2018-08-21),

12. 10030476 - Tubing retrievable injection valve assembly (2018-07-24),

13. 10018022 - Method and apparatus for injecting fluid into spaced injection zones in an oil/gas well (2018-07-10),

14. 9920593 - Dual barrier injection valve with a variable orifice (2018-03-20),

15. 9771777 - Tubing retrievable injection valve assembly (2017-09-26),

Tejas Research + Engineering, LLC is a leading provider of engineering and research services, specializing in advanced technology solutions for defense, aerospace, and commercial sectors. With a commitment to innovation and excellence, Tejas offers a range of services including software development, systems engineering, and technical consulting. The company is dedicated to delivering high-quality solutions that meet the unique needs of its clients, leveraging a team of experienced professionals and cutting-edge technologies.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

Tejas Research + Engineering, LLC

26 Patents

#19 in The Woodlands, TX

#739 in Texas

#12,843 in US

#24,758 in the World

The Woodlands, TX, United States of America

Tejas Research + Engineering, LLC

Forward Citations = 121

9 inventors:

Thomas G Hill, Jr (21 out of 34 patents)

Robert C Henschel, Jr (11 out of 14 patents)

Jason Charles Mailand (11 out of 39 patents)

4. Shane W Pfaff (3 out of 4 patents)

5. Rory L Hodge (3 out of 4 patents)

Please report any incorrect information to [email protected]

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