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Warrendale, PA, United States of America

Usfilter Corporation

USPTO Granted Patents = 35

Trademarks = 80

Forward Citations = 500

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49 inventors (with patents filed for the assignee):

Darin Lynn St Germain (4 out of 8 patents)

Stephen B Wilcher (4 out of 22 patents)

Li-Shiang Liang (3 out of 70 patents)

4. David J Hunniford (3 out of 9 patents)

5. James Richard Graham (3 out of 9 patents)

6. James Paul Harshman (2 out of 10 patents)

7. John W Arba (2 out of 8 patents)

8. Anil D Jha (2 out of 40 patents)

9. David L Morano (2 out of 8 patents)

10. Cheng Jian Yuan (2 out of 2 patents)

11. Frank L Sassaman, Jr (2 out of 3 patents)

12. Stanley R Kaars (2 out of 2 patents)

13. James L Filson (2 out of 5 patents)

14. Philip M Kemp (2 out of 3 patents)

15. Roy William Martin (2 out of 48 patents)

35 patents: Sort by Forward Citations

1. 7208090 - Wastewater treatment control (2007-04-24),

2. 7147785 - Electrodeionization device and methods of use (2006-12-12),

3. 7138049 - Apparatus for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater (2006-11-21),

4. 7135109 - Filter screen assembly (2006-11-14),

5. 7108781 - Enhanced air and water purification using continuous breakpoint halogenation with free oxygen radicals (2006-09-19),

6. 7101417 - Activated carbon for odor control and method for making same (2006-09-05),

7. 7087172 - Methods for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater (2006-08-08),

8. 7083733 - Water treatment system and method (2006-08-01),

9. 7063787 - Filter media retaining cap and hold down grid (2006-06-20),

10. 7022269 - Activated carbon for odor control and method for making same (2006-04-04),

11. 7014783 - Flow splitting weir (2006-03-21),

12. 7014754 - Tilt-out frame for a filter screen (2006-03-21),

13. 6997328 - Grit removal assemblies (2006-02-14),

14. 6991735 - Free radical generator and method (2006-01-31),

15. 6991726 - Filter having a media retaining plate (2006-01-31),

USFilter Corporation is a leading provider of water treatment systems and services. With a focus on innovation and sustainability, the company offers comprehensive solutions for water and wastewater treatment, including process technologies, equipment, and related services. USFilter Corporation serves a wide range of industries, municipalities, and the public sector, helping to improve water quality and protect the environment.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

35 Patents

#3 in Warrendale, PA

#353 in Pennsylvania

#9,423 in US

#18,611 in the World

Warrendale, PA, United States of America

Usfilter Corporation

Forward Citations = 500

49 inventors:

Darin Lynn St Germain (4 out of 8 patents)

Stephen B Wilcher (4 out of 22 patents)

Li-Shiang Liang (3 out of 70 patents)

4. David J Hunniford (3 out of 9 patents)

5. James Richard Graham (3 out of 9 patents)

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