For the Inventor, By the Inventor

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Oconomowoc, WI, United States of America

Sentry Equipment Corporation

USPTO Granted Patents = 18

CIPO Patents = 2

EPO Patents = 1

Trademarks = 12

Forward Citations = 119

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16 inventors (with patents filed for the assignee):

Richard R Henszey (5 out of 6 patents)

Bruce W Weiss (4 out of 32 patents)

John C Schadt (4 out of 4 patents)

4. Eugene R Rommelfaenger (4 out of 4 patents)

5. Michael D Farrell (3 out of 6 patents)

6. David Nowak (2 out of 2 patents)

7. Mark Zeck (2 out of 2 patents)

8. Nathan Pliska (1 out of 1 patent)

9. Eric Stolz (1 out of 1 patent)

10. Jay L Kristola (1 out of 3 patents)

11. Tanner Hallett (1 out of 1 patent)

12. Gary K Evans (1 out of 6 patents)

13. Wilie V Evans (1 out of 2 patents)

14. Scott E Raether (1 out of 1 patent)

15. Joseph L Leon (1 out of 4 patents)

18 patents: Sort by Forward Citations

1. 10808888 - Vessel and pipeline insertion tool (2020-10-20),

2. 10359342 - Pipeline sampler (2019-07-23),

3. 10288466 - Flow totalizer (2019-05-14),

4. RE46378 - Assembly for insertion of an object into a pipeline (2017-04-24),

5. 8475550 - Self-optimizing odorant injection system (2013-07-02),

6. 8349038 - Self optimizing odorant injection system (2013-01-08),

7. 7481124 - Positive-displacement sampling apparatus (2009-01-27),

8. 6546819 - Apparatus for sampling fluid from reactor vessel (2003-04-15),

9. RE37153 - Variable pressure reducing device (2001-05-01),

10. 6205869 - Apparatus and method for sampling fluid from reactor vessel (2001-03-27),

11. 5826790 - Temperature-sensitive shutoff valve (1998-10-27),

12. 5469751 - Manifolded sampling valve assembly (1995-11-28),

13. 5363874 - Automated sample conditioning module (1994-11-15),

14. D349563 - Steam sample cooler (1994-08-09),

15. 5333648 - Variable pressure reducing device (1994-08-02),

Sentry Equipment Corporation is a global supplier of sampling equipment for a variety of industries, including oil and gas, power generation, and chemical manufacturing. With over 90 years of experience, Sentry provides high-quality sampling solutions to help companies ensure the safety and quality of their products.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

18 Patents

#3 in Oconomowoc, WI

#414 in Wisconsin

#17,414 in US

#33,185 in the World

Oconomowoc, WI, United States of America

Sentry Equipment Corporation

Forward Citations = 119

16 inventors:

Richard R Henszey (5 out of 6 patents)

Bruce W Weiss (4 out of 32 patents)

John C Schadt (4 out of 4 patents)

4. Eugene R Rommelfaenger (4 out of 4 patents)

5. Michael D Farrell (3 out of 6 patents)

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