For the Inventor, By the Inventor

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Alsip, IL, United States of America

Hydra-Stop, Inc.

USPTO Granted Patents = 10

Forward Citations = 95

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15 inventors (with patents filed for the assignee):

Christopher C Vazzana (7 out of 7 patents)

Andrew J Nelson (5 out of 7 patents)

Carl Mastny (5 out of 5 patents)

4. Stephen Roehrig (2 out of 2 patents)

5. Panagiotis Tsafaras (2 out of 2 patents)

6. Ariel Choi (2 out of 2 patents)

7. Kevin P Murphy (2 out of 4 patents)

8. Garland Y Smith (2 out of 7 patents)

9. Cullen J Geppert (2 out of 2 patents)

10. Cole Strickland (1 out of 1 patent)

11. Atticus D Rush (1 out of 1 patent)

12. Michael Murphy (1 out of 1 patent)

13. Michael J Redman (1 out of 1 patent)

14. Nathan Smrha (1 out of 1 patent)

15. Andrew J Stolson (1 out of 1 patent)

10 patents: Sort by Forward Citations

1. 12578050 - Insertion valves and methods of installing insertion valves in pressurized pipes (2026-03-17),

2. 11530761 - Systems and methods for protecting a tether line disposed in a pressurized pipe (2022-12-20),

3. 11248992 - Systems and methods for accessing and monitoring a fluid within a pressurized pipe (2022-02-15),

4. 10718458 - Automated pressure equalization above and below completion plug of gate valve cartridge or a completion plug of a line stop fitting (2020-07-21),

5. 10619747 - Expanding gate valve assembly with pressure equalization system (2020-04-14),

6. 10473560 - Pipe core sampling and tapping apparatus (2019-11-12),

7. 9829141 - Linestops, nozzles and completion plugs for installation in pressurized pipes (2017-11-28),

8. 9644779 - Gate valves for installation in pressurized pipes (2017-05-09),

9. 6810903 - Conduit flow controller (2004-11-02),

10. 6125868 - Method and apparatus for maintaining valves in a water distribution (2000-10-03),

Hydra-Stop, Inc. is a leading provider of innovative solutions for the water industry. Their line of products includes the Hydra-Stop Insta-Valve equipment, which allows for safe and efficient line stopping and valve insertion. With a focus on quality and reliability, Hydra-Stop, Inc. is committed to helping water utilities improve their infrastructure and ensure the reliable delivery of clean water to communities.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

10 Patents

#6 in Alsip, IL

#1,440 in Illinois

#29,828 in US

#55,954 in the World

Alsip, IL, United States of America

Hydra-Stop, Inc.

Forward Citations = 95

15 inventors:

Christopher C Vazzana (7 out of 7 patents)

Andrew J Nelson (5 out of 7 patents)

Carl Mastny (5 out of 5 patents)

4. Stephen Roehrig (2 out of 2 patents)

5. Panagiotis Tsafaras (2 out of 2 patents)

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