For the Inventor, By the Inventor

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Houston, TX, United States of America

Ashbrook Simon-hartley, LP

USPTO Granted Patents = 13

Forward Citations = 115

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20 inventors (with patents filed for the assignee):

Harold W Johnson (4 out of 10 patents)

Yongming Xia (3 out of 9 patents)

Anthony M Wachinski (2 out of 4 patents)

4. Richard P Johnson (2 out of 2 patents)

5. Jaime Bengoechea (2 out of 2 patents)

6. Charles E Tharp (1 out of 35 patents)

7. Jeffrey S Devine (1 out of 10 patents)

8. William L Christie (1 out of 7 patents)

9. Peter Ian Baldwin (1 out of 3 patents)

10. Kathryn Elizabeth McKell (1 out of 2 patents)

11. David B Derryberry (1 out of 1 patent)

12. Kenneth R Blackwood (1 out of 1 patent)

13. Thomas M Schiene (1 out of 1 patent)

14. Robert C Black (1 out of 1 patent)

15. Khai Tran (1 out of 1 patent)

13 patents: Sort by Forward Citations

1. 8152998 - Screenless granular media filters and methods of use (2012-04-10),

2. 5730886 - Continuous self-cleaning filtration unit (1998-03-24),

3. 5582722 - Continuous self-cleaning filtration unit (1996-12-10),

4. 5248612 - Apparatus for composting using improved charging and discharging sequence (1993-09-28),

5. 5139554 - Composting method and apparatus utilizing inclined vessel (1992-08-18),

6. 5133872 - Method and apparatus for controlling throughput in a beltpress (1992-07-28),

7. 5076827 - Method and apparatus for composting using improved charging and (1991-12-31),

8. 5049486 - Temperature monitoring apparatus and method in a composting system (1991-09-17),

9. 5023178 - Composting method and apparatus utilizing air assist to aid in movement (1991-06-11),

10. 4891142 - Moving bed filtration apparatus and method (1990-01-02),

11. 4839053 - Biomass growth process with separate aeration and media compartments (1989-06-13),

12. 4836100 - Apparatus for regulating feed thickness in a belt press (1989-06-06),

13. 4731188 - Adjustable ramp for dewatering device (1988-03-15),

Ashbrook Simon-Hartley, LP is a leading provider of wastewater treatment solutions. With over 90 years of experience, the company offers a wide range of products and services, including clarifiers, filters, and sludge thickeners. Ashbrook Simon-Hartley is known for its innovative technology and commitment to sustainability.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

13 Patents

#378 in Houston, TX

#1,449 in Texas

#23,099 in US

#43,615 in the World

Houston, TX, United States of America

Ashbrook Simon-hartley, LP

Forward Citations = 115

20 inventors:

Harold W Johnson (4 out of 10 patents)

Yongming Xia (3 out of 9 patents)

Anthony M Wachinski (2 out of 4 patents)

4. Richard P Johnson (2 out of 2 patents)

5. Jaime Bengoechea (2 out of 2 patents)

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