For the Inventor, By the Inventor

Enter assignee name

Oklahoma City, OK, United States of America

Sunstone Corporation

USPTO Granted Patents = 12

% Expired Patents = 50.0

CIPO Patents = 2

Trademarks = 1

Forward Citations = 382

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11 inventors (with patents filed for the assignee):

William James Hughes (9 out of 33 patents)

Mark Dunbar (2 out of 6 patents)

Murl Ray Richardson (2 out of 3 patents)

4. W James Hughes (2 out of 2 patents)

5. Jimmie Josh Renfro (2 out of 4 patents)

6. Kurt D Vandervort (1 out of 4 patents)

7. Thomas L Pettigrew (1 out of 2 patents)

8. Kenneth D Young (1 out of 8 patents)

9. Richard Wayne Adams (1 out of 3 patents)

10. Ernest Kabay (1 out of 1 patent)

11. Gabriella H Kabay (1 out of 1 patent)

12. Murl R Richardson (2 patents)

12 patents: Sort by Forward Citations

1. 8028750 - Force balanced rotating pressure control device (2011-10-04),

2. 7981379 - Producing nitrogen to use in under balanced drilling, secondary recovery production operations and pipeline maintenance (2011-07-19),

3. 7537062 - Flapper valve and actuator (2009-05-26),

4. 7468173 - Method for producing nitrogen to use in under balanced drilling, secondary recovery production operations and pipeline maintenance (2008-12-23),

5. 7380590 - Rotating pressure control head (2008-06-03),

6. 7226090 - Rod and tubing joint of multiple orientations containing electrical wiring (2007-06-05),

7. 7137945 - Underground treatment of biowaste (2006-11-21),

8. 6899188 - Down hole drilling assembly with concentric casing actuated jet pump (2005-05-31),

9. 6877571 - Down hole drilling assembly with independent jet pump (2005-04-12),

10. 6769498 - Method and apparatus for inducing under balanced drilling conditions using an injection tool attached to a concentric string of casing (2004-08-03),

11. 6666274 - Tubing containing electrical wiring insert (2003-12-23),

12. 4857228 - Phosphors and methods of preparing the same (1989-08-15),

Sunstone Corporation is a leading provider of innovative technology solutions for businesses worldwide. With a focus on cutting-edge software development and digital transformation services, Sunstone helps organizations streamline their operations, increase efficiency, and stay ahead of the competition. The company is known for its dedication to customer satisfaction and commitment to delivering high-quality products and services.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Sep 15 2026

Sunstone Corporation

12 Patents

#27 in Oklahoma City, OK

#123 in Oklahoma

#25,496 in US

#48,036 in the World

Oklahoma City, OK, United States of America

Sunstone Corporation

Forward Citations = 382

11 inventors:

William James Hughes (9 out of 33 patents)

Mark Dunbar (2 out of 6 patents)

Murl Ray Richardson (2 out of 3 patents)

4. W James Hughes (2 out of 2 patents)

5. Jimmie Josh Renfro (2 out of 4 patents)

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