For the Inventor, By the Inventor

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Roseville, MN, United States of America

Rheodyne, LLC

USPTO Granted Patents = 20

EPO Patents = 4

Trademarks = 9

Forward Citations = 638

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17 inventors (with patents filed for the assignee):

Jon A Nichols (6 out of 13 patents)

Yuri E Gerner (5 out of 42 patents)

Carl W Sims (4 out of 67 patents)

4. Jonathan Mark Thompson (3 out of 16 patents)

5. Richard Gundelfinger (3 out of 4 patents)

6. Carl Hermann Poppe (2 out of 20 patents)

7. Kristine Olsen (2 out of 3 patents)

8. Stephen R Bakalyar (2 out of 3 patents)

9. Carl M Servin (1 out of 8 patents)

10. Michael R Straka (1 out of 3 patents)

11. Thomas J Thielen (1 out of 10 patents)

12. Marc D Foster (1 out of 2 patents)

13. Burney L Baron (1 out of 1 patent)

14. Steve Bakalyar (1 out of 1 patent)

15. Brian Hauck (1 out of 1 patent)

20 patents: Sort by Forward Citations

1. 7947112 - Method for degassing a fluid (2011-05-24),

2. 7713331 - Axial transfer line degassing (2010-05-11),

3. 7427312 - Integrated degassing and debubbling apparatus (2008-09-23),

4. 7399345 - Capillary flow restrictor apparatus (2008-07-15),

5. 7298472 - Fluid analysis apparatus (2007-11-20),

6. 7201185 - Coupled drive multi-position fluid valve apparatus and method (2007-04-10),

7. 7014222 - Tube connection system (2006-03-21),

8. 6890489 - Mass rate attenuator (2005-05-10),

9. 6672336 - Dual random access, three-way rotary valve apparatus (2004-01-06),

10. 6453946 - Long lifetime fluid switching valve (2002-09-24),

11. 6382035 - Multi-valving sample injection apparatus (2002-05-07),

12. 6155123 - Multivalving sample injection system (2000-12-05),

13. 6012488 - Segmenting valve (2000-01-11),

14. 5803117 - Multi-route full sweep selection valve (1998-09-08),

15. 5207109 - Internal-external sample injector (1993-05-04),

Rheodyne, LLC is a leading provider of fluid handling solutions for the life sciences industry. With over 50 years of experience in developing innovative products, Rheodyne is known for their reliable and precise chromatography valves and injectors. Their high-quality products are used by researchers and scientists around the world to ensure accurate and efficient analysis of samples in various applications.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

20 Patents

#9 in Roseville, MN

#477 in Minnesota

#15,856 in US

#30,316 in the World

Roseville, MN, United States of America

Rheodyne, LLC

Forward Citations = 638

17 inventors:

Jon A Nichols (6 out of 13 patents)

Yuri E Gerner (5 out of 42 patents)

Carl W Sims (4 out of 67 patents)

4. Jonathan Mark Thompson (3 out of 16 patents)

5. Richard Gundelfinger (3 out of 4 patents)

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