For the Inventor, By the Inventor

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Houston, TX, United States of America

Ashbrook Simon-Hartley, LP

USPTO Granted Patents = 13

% Expired Patents = 7.7

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),

Company Overview

Ashbrook Simon-Hartley, LP is a prominent provider of advanced separation and filtration technologies, primarily serving the water and wastewater treatment sectors. The company specializes in the design and manufacture of innovative solutions that enhance the efficiency and effectiveness of liquid-solid separation processes. With a strong presence in Houston, TX, Ashbrook Simon-Hartley focuses on delivering sustainable and reliable systems that meet the evolving needs of its clients in various industrial applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

13 Patents

#390 in Houston, TX

#1,487 in Texas

#23,838 in US

#45,039 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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ashbrook Simon-Hartley, LP. Retrieved from https://idiyas.com/company/ashbrook-simon-hartley

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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