For the Inventor, By the Inventor

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New Orleans, LA, United States of America

Shell Offshore Inc.

USPTO Granted Patents = 67

Forward Citations = 1,247

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49 inventors (with patents filed for the assignee):

Howard L Shatto, Jr (8 out of 8 patents)

Bobby E Cox (6 out of 11 patents)

Romulo Gonzalez (4 out of 10 patents)

4. John J Pritchard, Jr (4 out of 4 patents)

5. Paul B Ritter, Jr (4 out of 5 patents)

6. William H Petersen (4 out of 6 patents)

7. Arthur G Ahlstone (3 out of 29 patents)

8. Anthony M Zibilich, Jr (3 out of 5 patents)

9. Dale M Gallaher (3 out of 5 patents)

10. Samlal Nandlal (3 out of 3 patents)

11. Mark Adrian Smith (2 out of 6 patents)

12. Gary L Marsh (2 out of 3 patents)

13. Lee K Brasted (2 out of 9 patents)

14. James W Stevens (2 out of 9 patents)

15. George E Sgouros (2 out of 4 patents)

Core Competencies:

Subsea Gas Separation

Deepwater Drilling

Hydraulic Stab Subassembly

Seismic Cable Deployment

Offshore Pollution Prevention

Floating Platform Technology

Wellhead Assembly

Marine Riser Assembly

Manipulator Apparatus

Buoyant Riser Tensioner

Mud Circulation Control

Gas Kick Detection

67 patents: Sort by Forward Citations

1. 6276455 - Subsea gas separation system and method for offshore drilling (2001-08-21),

2. 6263981 - Deepwater drill string shut-off valve system and method for controlling mud circulation (2001-07-24),

3. 6216799 - Subsea pumping system and method for deepwater drilling (2001-04-17),

4. 5741089 - Method for enhanced redeployability of hyjack platforms (1998-04-21),

5. D384574 - Grating clip for securing fiberglass deck elements to an offshore (1997-10-07),

6. 5593250 - Hyjack platform with buoyant rig supplemental support (1997-01-14),

7. 5551801 - Hyjack platform with compensated dynamic response (1996-09-03),

8. D366825 - Grating clip (1996-02-06),

9. 5273376 - Back-up connector release tool (1993-12-28),

10. 5237949 - Floating platform shallow draft hull/deck mating (1993-08-24),

11. 5199659 - Seismic cable retrieval apparatus and method (1993-04-06),

12. 5197716 - Seismic cable deployment apparatus (1993-03-30),

13. 5184686 - Method for offshore drilling utilizing a two-riser system (1993-02-09),

14. 5168933 - Combination hydraulic tubing hanger and chemical injection sub (1992-12-08),

15. 5161620 - Subsea production wellhead assembly (1992-11-10),

Shell Offshore Inc. is a subsidiary of Royal Dutch Shell, a world-leading energy company. Shell Offshore focuses on the exploration, development, and production of oil and gas resources from beneath the world's oceans. With decades of offshore experience, Shell Offshore employs advanced technologies and innovative practices to safely extract hydrocarbons in a sustainable manner. As a responsible operator, the company places high importance on environmental protection, community engagement, and operational excellence.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

67 Patents

#2 in New Orleans, LA

#10 in Louisiana

#5,222 in US

#10,602 in the World

New Orleans, LA, United States of America

Shell Offshore Inc.

Forward Citations = 1,247

49 inventors:

Howard L Shatto, Jr (8 out of 8 patents)

Bobby E Cox (6 out of 11 patents)

Romulo Gonzalez (4 out of 10 patents)

4. John J Pritchard, Jr (4 out of 4 patents)

5. Paul B Ritter, Jr (4 out of 5 patents)

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