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Forward Citations = 946

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7 inventors (with patents filed for the assignee):

Clyde A Willis (10 out of 23 patents)

Keith M Haney (5 out of 11 patents)

Gary T Oatman (2 out of 2 patents)

4. Jerry K Lingafelter (2 out of 5 patents)

5. Clyde D Durrett (1 out of 1 patent)

6. Lee Roy Hodge (1 out of 5 patents)

7. Harold L Adair (1 out of 3 patents)

14 patents: Sort by Forward Citations

1. 5297833 - Apparatus for gripping a down hole tubular for support and rotation (1994-03-29),

2. 5294228 - Automatic sequencing system for earth drilling machine (1994-03-15),

3. 5273388 - Lifting device for down hole tubulars (1993-12-28),

4. 5259723 - Feeding device for down hole tubulars (1993-11-09),

5. 5054550 - Centering spinning for down hole tubulars (1991-10-08),

6. 5036927 - Apparatus for gripping a down hole tubular for rotation (1991-08-06),

7. 4867236 - Compact casing tongs for use on top head drive earth drilling machine (1989-09-19),

8. 4842250 - Line reeving system for earth drilling machine (1989-06-27),

9. 4821816 - Method of assembling a modular drilling machine (1989-04-18),

10. 4815546 - Top head drive assembly with axially movable quill (1989-03-28),

11. 4762187 - Internal wrench for a top head drive assembly (1988-08-09),

12. 4759414 - Modular drilling machine and components thereof (1988-07-26),

13. 4708581 - Method of positioning a transfer arm (1987-11-24),

14. 4650236 - Automatic pipe elevator (1987-03-17),

W-N Apache Corporation, based in Wichita Falls, Texas, specializes in the development and manufacturing of advanced aerospace and defense technologies. The company focuses on providing innovative solutions for both military and commercial applications, emphasizing reliability and performance in its products. With a commitment to research and development, W-N Apache Corporation engages in various technology domains, including avionics, propulsion systems, and unmanned aerial vehicles, contributing to advancements in the aerospace sector.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

14 Patents

#5 in Wichita Falls, TX

#1,378 in Texas

#22,302 in US

#42,199 in the World

Wichita Falls, TX, United States of America

W-N Apache Corporation