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. specializes in the development and manufacturing of innovative infrastructure solutions. The company focuses on providing a wide range of precast concrete products and systems that support various sectors, including transportation, water management, and utility services. With a commitment to sustainability and advanced engineering, Oldcastle Infrastructure aims to enhance the resilience and efficiency of infrastructure projects across North America, contributing to the development of smart and sustainable communities.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

17 Patents

#4 in Auburn, WA

#403 in Washington

#18,881 in US

#35,887 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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