For the Inventor, By the Inventor

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Auburn, WA, United States of America

Oldcastle Infrastructure, Inc.

USPTO Granted Patents = 17

% Expired Patents = 29.4

Trademarks = 31

Forward Citations = 33

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17 inventors (with patents filed for the assignee):

Tom Happel (6 out of 19 patents)

James Ferguson Holtz (3 out of 5 patents)

Thomas Happel (2 out of 22 patents)

4. Nguyen Thai Dang (2 out of 12 patents)

5. Christopher Ryan Demarest (2 out of 2 patents)

6. Mike Collins (1 out of 1 patent)

7. Chris Ryan Demarest (1 out of 2 patents)

8. F Matthew Schweinberg (1 out of 3 patents)

9. Jeff S Zager (1 out of 2 patents)

10. Ross Jette (1 out of 2 patents)

11. Johnny M Bishop (1 out of 1 patent)

12. Robert E Hughes (1 out of 1 patent)

13. Jacob Nohl (1 out of 1 patent)

14. Alec Gausman (1 out of 1 patent)

15. Craig Knochenmus (1 out of 1 patent)

17 patents: Sort by Forward Citations

1. 12590030 - Vaults, lids and trenches using recycled polystyrene (2026-03-31),

2. 12208546 - Manhole urethane mold and method of producing the same (2025-01-28),

3. 11905759 - Anchoring a cantilevered step to a fiberglass utility pole (2024-02-20),

4. 11499305 - Inline bioremediation liquid treatment system (2022-11-15),

5. 11491422 - Dual screen treatment systems with debris ramps and screened deflectors (2022-11-08),

6. 11479487 - Stormwater management system with internal bypass (2022-10-25),

7. 11420880 - Stormwater filtration system with internal bypass pipe (2022-08-23),

8. 11253798 - Nutrient removal filtration system and method (2022-02-22),

9. 11066803 - Locking subgrade vault (2021-07-20),

10. 10947693 - Reinforced lid for subgrade enclosures (2021-03-16),

11. 10926199 - Round baffle box water treatment system with at least one sidewall baffle (2021-02-23),

12. 10918975 - Dual screen treatment systems with debris ramps and screened deflectors (2021-02-16),

13. 10907338 - Hinged variable flow skimmer and shelf system (2021-02-02),

14. 10696573 - Tree box filter with hydromodification panels (2020-06-30),

15. 10683886 - Interchangeable insert (2020-06-16),

Oldcastle Infrastructure, Inc. is a leading provider of engineered building product solutions for infrastructure and commercial construction projects. With a diverse range of products including precast concrete, polymer concrete, and plastic products, Oldcastle Infrastructure offers innovative solutions for water management, transportation, electrical, and communications infrastructure projects. Their commitment to quality, sustainability, and customer satisfaction has made them a trusted partner in the construction industry.

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

Company Badge

USPTO Data Jan 1 1976 - Sep 15 2026

17 Patents

#4 in Auburn, WA

#403 in Washington

#18,850 in US

#35,824 in the World

Auburn, WA, United States of America

Oldcastle Infrastructure, Inc.

Forward Citations = 33

17 inventors:

Tom Happel (6 out of 19 patents)

James Ferguson Holtz (3 out of 5 patents)

Thomas Happel (2 out of 22 patents)

4. Nguyen Thai Dang (2 out of 12 patents)

5. Christopher Ryan Demarest (2 out of 2 patents)

Please report any incorrect information to [email protected]

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