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Rothschild, WI, United States of America

Zimpro Passavant Environmental Systems, Inc.

USPTO Granted Patents = 12

Forward Citations = 388

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18 inventors (with patents filed for the assignee):

Richard W Lehmann (3 out of 11 patents)

Bruce L Brandenburg (2 out of 12 patents)

William M Copa (2 out of 7 patents)

4. David A Beula (2 out of 3 patents)

5. Russell G Forbess (1 out of 3 patents)

6. David S Ross (1 out of 6 patents)

7. Glover C McIntyre (1 out of 3 patents)

8. Robert J Kamke (1 out of 1 patent)

9. Gene W Mueller (1 out of 2 patents)

10. Robert J Lacombe (1 out of 1 patent)

11. Kent T Depuydt (1 out of 1 patent)

12. Joseph S Tikalsky (1 out of 1 patent)

13. Ronald L Edwards (1 out of 2 patents)

14. Thomas L Baumann (1 out of 1 patent)

15. Joseph A Momont (1 out of 5 patents)

12 patents: Sort by Forward Citations

1. 5262060 - Wet oxidation of ammonium salt containing liquors (1993-11-16),

2. 5240619 - Two-stage subcritical-supercritical wet oxidation (1993-08-31),

3. 5230810 - Corrosion control for wet oxidation systems (1993-07-27),

4. 5192442 - Multiple zone batch treatment process (1993-03-09),

5. 5183577 - Process for treatment of wastewater containing inorganic ammonium salts (1993-02-02),

6. 5089147 - Underdrain for granular medium filter (1992-02-18),

7. 5084163 - Automatically controlled splash plate (1992-01-28),

8. 5082571 - Caustic sulfide wet oxidation process (1992-01-21),

9. 5075015 - Method for color removal from thermally conditioned sludge liquors (1991-12-24),

10. 5057231 - Method for starting up and controlling operating temperature of a wet (1991-10-15),

11. 5018458 - Furnace combustion zone temperature control method (1991-05-28),

12. 5011114 - Control valve with displacement-compensating seal (1991-04-30),

Zimpro Passavant Environmental Systems, Inc. is a leading provider of advanced water and wastewater treatment solutions. With over 50 years of experience, the company offers a wide range of innovative technologies and services to meet the diverse needs of industrial, municipal, and commercial clients worldwide. From custom-engineered systems to comprehensive maintenance and support, Zimpro Passavant is committed to delivering sustainable and cost-effective solutions for a cleaner and healthier environment.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

12 Patents

#2 in Rothschild, WI

#564 in Wisconsin

#24,828 in US

#46,735 in the World

Rothschild, WI, United States of America

Zimpro Passavant Environmental Systems, Inc.

Forward Citations = 388

18 inventors:

Richard W Lehmann (3 out of 11 patents)

Bruce L Brandenburg (2 out of 12 patents)

William M Copa (2 out of 7 patents)

4. David A Beula (2 out of 3 patents)

5. Russell G Forbess (1 out of 3 patents)

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