For the Inventor, By the Inventor

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Austin, TX, United States of America

Enviroquip Inc.

USPTO Granted Patents = 16

Trademarks = 3

Forward Citations = 327

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14 inventors (with patents filed for the assignee):

Elena Bailey (5 out of 5 patents)

Robert H Shurtleff (4 out of 4 patents)

Hiren Trivedi (2 out of 10 patents)

4. Gary D Haggard (2 out of 3 patents)

5. Milton R Melber (2 out of 2 patents)

6. Dennis Livingston (1 out of 10 patents)

7. Jeffrey A Hallsten (1 out of 22 patents)

8. James Porteous (1 out of 6 patents)

9. Tony L Langley (1 out of 1 patent)

10. Jeffrey Charles Kauppila (1 out of 1 patent)

11. Robert E Emrie (1 out of 1 patent)

12. William N Walton (1 out of 1 patent)

13. Henry J Hervol (1 out of 1 patent)

14. Harrington, James M (1 out of 1 patent)

16 patents: Sort by Forward Citations

1. 6743362 - Sewage treatment process (2004-06-01),

2. 6712970 - Sewage treatment process with phosphorus removal (2004-03-30),

3. 6691413 - Underdrain filtration system with stamped perforations (2004-02-17),

4. 6454104 - Clarifier with influent well scum removal (2002-09-24),

5. 6274044 - Clarifier with influent well scum removal (2001-08-14),

6. 6090284 - Underdrain unit for granular filtration system (2000-07-18),

7. 6068134 - Clarifier with influent well scum removal (2000-05-30),

8. 5972220 - Pre-thickened aerobic digester system (1999-10-26),

9. 5830356 - Hydraulic differential clarifier (1998-11-03),

10. 5779890 - Multi-eductor system (1998-07-14),

11. 5545358 - Tank cover structure with aeration distribution (1996-08-13),

12. 5264126 - Clarifier drive for waste water treatment system (1993-11-23),

13. 5240609 - Sludge filtering device and grid system (1993-08-31),

14. 4863644 - Gas diffuser (1989-09-05),

15. 4720360 - Diffused aeration system (1988-01-19),

Enviroquip Inc. is a leading environmental solutions provider specializing in wastewater treatment equipment. With over 30 years of experience, we offer innovative solutions for industries seeking to reduce their environmental impact. Our products range from biological treatment systems to clarifiers and filters, all designed to meet the highest standards of efficiency and sustainability. Visit our website to learn more about our cutting-edge solutions and how we can help your business achieve its environmental goals.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

16 Patents

#191 in Austin, TX

#1,192 in Texas

#19,271 in US

#36,634 in the World

Austin, TX, United States of America

Enviroquip Inc.

Forward Citations = 327

14 inventors:

Elena Bailey (5 out of 5 patents)

Robert H Shurtleff (4 out of 4 patents)

Hiren Trivedi (2 out of 10 patents)

4. Gary D Haggard (2 out of 3 patents)

5. Milton R Melber (2 out of 2 patents)

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