For the Inventor, By the Inventor

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West Chester, OH, United States of America

Contech Construction Products Inc.

USPTO Granted Patents = 16

Trademarks = 16

Forward Citations = 240

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8 inventors (with patents filed for the assignee):

James William Shade (7 out of 8 patents)

James C Schluter (5 out of 9 patents)

William L Zepp (3 out of 5 patents)

4. O'Dell Brinegar (3 out of 3 patents)

5. Hubert M Drossbach (2 out of 3 patents)

6. Lyle Eugene Miller (2 out of 2 patents)

7. Thomas A Nein (1 out of 1 patent)

8. Robert J Higgs (1 out of 1 patent)

16 patents: Sort by Forward Citations

1. 8109540 - Pipe joint and related method (2012-02-07),

2. 7574886 - Apparatus for producing helically corrugated metal pipe and related method (2009-08-18),

3. 7404308 - Apparatus for producing helically corrugated metal pipe and related method (2008-07-29),

4. 6994381 - Stab joint coupling (2006-02-07),

5. 5862581 - Method for making a joint for a corrugated pipe segment (1999-01-26),

6. 5842727 - Coupling for spiral corrugated pipe (1998-12-01),

7. 5707088 - Joint for coupling plastic corrugated pipes (1998-01-13),

8. 5564857 - Slutted drain (1996-10-15),

9. 5383693 - Gaskets used in joining corrugated pipe (1995-01-24),

10. 5380121 - Slotted drain (1995-01-10),

11. 5124109 - Method for producing a double wall pipe (1992-06-23),

12. 4974440 - Self propelled internal pipe arching apparatus (1990-12-04),

13. 4914939 - Self propelled internal pipe arching apparatus (1990-04-10),

14. 4865357 - Metal pipe coupling to accommodate a desired angle of connection between (1989-09-12),

15. 4846660 - Apparatus for producing double wall pipe (1989-07-11),

Contech Construction Products Inc. provides innovative solutions for the civil engineering and construction industry. With a wide range of products including stormwater management, bridges, and retaining walls, Contech is committed to delivering high-quality, sustainable solutions for infrastructure projects. With over 30 years of experience, Contech is a trusted partner for construction professionals around the world.

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

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USPTO Data Jan 1 1976 - Sep 15 2026

16 Patents

#8 in West Chester, OH

#846 in Ohio

#19,875 in US

#37,723 in the World

West Chester, OH, United States of America

Contech Construction Products Inc.

Forward Citations = 240

8 inventors:

James William Shade (7 out of 8 patents)

James C Schluter (5 out of 9 patents)

William L Zepp (3 out of 5 patents)

4. O'Dell Brinegar (3 out of 3 patents)

5. Hubert M Drossbach (2 out of 3 patents)

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