% Expired Patents = 8.3

Trademarks = 1

Forward Citations = 317

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8 inventors (with patents filed for the assignee):

Wayne W Frenier (4 out of 32 patents)

Charles D Foster (4 out of 6 patents)

Thomas B Thrash, Jr (2 out of 7 patents)

4. Stephen T Arrington (1 out of 7 patents)

5. R Dwane Ruiz (1 out of 1 patent)

6. Gary W Bradley (1 out of 7 patents)

7. Mark S Keys (1 out of 2 patents)

8. Charles D Stasny (1 out of 1 patent)

12 patents: Sort by Forward Citations

1. 6521028 - Low hazard corrosion inhibitors and cleaning solutions using quaternary ammonium salts (2003-02-18),

2. 6503334 - Forced mist cleaning of combustion turbines (2003-01-07),

3. 6491048 - Manifold for use in cleaning combustion turbines (2002-12-10),

4. 6478033 - Methods for foam cleaning combustion turbines (2002-11-12),

5. 6311704 - Methods and apparatus for chemically cleaning turbines (2001-11-06),

6. 6118000 - Methods for preparing quaternary ammonium salts (2000-09-12),

7. D422055 - High pressure, water lance handle (2000-03-28),

8. 5970574 - Apparatus and method for cleaning surfaces by removing and containing (1999-10-26),

9. 5679170 - Methods for removing iron oxide scale from interior surfaces of steel (1997-10-21),

10. 5529637 - Formic-carboxylic acid mixtures for removing iron oxide sclae from steel (1996-06-25),

11. 5462671 - Method of removing heavy metals from solutions of amino-carboxylic acids (1995-10-31),

12. 5419183 - Methods and apparatus using a hydrocarbon gel to isolate mainline valves (1995-05-30),

Company Overview

Hydrochem Industrial Services, Inc. is a prominent provider of industrial cleaning and environmental services, specializing in the maintenance and management of industrial facilities. Based in Deer Park, Texas, the company focuses on delivering innovative solutions for waste management, chemical cleaning, and equipment maintenance across various sectors, including petrochemical and manufacturing industries. Hydrochem is committed to enhancing operational efficiency while ensuring compliance with environmental regulations, making it a key player in the industrial services landscape.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

12 Patents

#3 in Deer Park, TX

#1,593 in Texas

#25,578 in US

#48,209 in the World

Deer Park, TX, United States of America

Hydrochem Industrial Services, Inc.

Forward Citations = 317

8 inventors:

Wayne W Frenier (4 out of 32 patents)

Charles D Foster (4 out of 6 patents)

Thomas B Thrash, Jr (2 out of 7 patents)

4. Stephen T Arrington (1 out of 7 patents)

5. R Dwane Ruiz (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hydrochem Industrial Services, Inc.. Retrieved from https://idiyas.com/company/hydrochem-industrial-services

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]