For the Inventor, By the Inventor

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Niagara Falls, NY, United States of America

Sevenson Environmental Services, Inc.

USPTO Granted Patents = 14

Forward Citations = 117

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10 inventors (with patents filed for the assignee):

Karl William Yost (11 out of 23 patents)

Dhiraj Pal (10 out of 11 patents)

Steven A Chisick (5 out of 5 patents)

4. Michael C Elia (2 out of 2 patents)

5. Wayne Arthur Kostuk (2 out of 2 patents)

6. Timothy M Donegan (1 out of 1 patent)

7. Michael D Crystal (1 out of 1 patent)

8. Russell W Harris (1 out of 2 patents)

9. Mason G Wheeler, Jr (1 out of 2 patents)

10. Steven C Shaw (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 12311418 - System for the controlled distribution of aquatic capping material and the capture of dust and particulates (2025-05-27),

2. 9162263 - Barge system for hydraulic spreading of aquatic capping material (2015-10-20),

3. 6635796 - Reduction of leachability and solubility of radionuclides and radioactive substances in contaminated soils and materials (2003-10-21),

4. 6357969 - Method of fabricating a groundwater monitoring system and a monitoring system formed using said method (2002-03-19),

5. 6309337 - Method of forming an insoluble phosphate mineral species (2001-10-30),

6. 6291736 - Reduction of leachability and solubility of radionuclides and radioactive substances in contaminated soils and materials (2001-09-18),

7. 6258018 - Fixation and stabilization of metals in contaminated soils and materials (2001-07-10),

8. 6139485 - Fixation and stabilization of metals in contaminated soils and materials (2000-10-31),

9. 5994608 - Reduction of leachability and solubility of radionuclides and (1999-11-30),

10. 5916123 - Fixation and stabilization of metals in contaminated soils and materials (1999-06-29),

11. 5732367 - Reduction of leachability and solubility of radionuclides and (1998-03-24),

12. 5569155 - Fixation and stabilization of metals in contaminated materials (1996-10-29),

13. 5527982 - Fixation and stabilization of metals in contaminated materials (1996-06-18),

14. 5397478 - Fixation and stabilization of chromium in contaminated materials (1995-03-14),

Sevenson Environmental Services, Inc. is a leading environmental remediation company specializing in hazardous waste removal, soil and groundwater remediation, and emergency response services. With over 40 years of experience, Sevenson has a proven track record of successful projects for commercial, industrial, and government clients across the United States.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

14 Patents

#5 in Niagara Falls, NY

#1,201 in New York

#1,015 in US

#40,906 in the World

Niagara Falls, NY, United States of America

Sevenson Environmental Services, Inc.

Forward Citations = 117

10 inventors:

Karl William Yost (11 out of 23 patents)

Dhiraj Pal (10 out of 11 patents)

Steven A Chisick (5 out of 5 patents)

4. Michael C Elia (2 out of 2 patents)

5. Wayne Arthur Kostuk (2 out of 2 patents)

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