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For the Inventor, By the Inventor

Roseville, MN, United States of America

Rheodyne, LLC


USPTO Granted Patents = 20


Trademarks = 8

Forward Citations = 653

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16 inventors (with patents filed for the assignee):

goldMedal Jon A Nichols (6 out of 13 patents)

silverMedal Yuri E Gerner (5 out of 42 patents)

bronzeMedal 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:

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),
Company Overview
Rheodyne, LLC is a specialized manufacturer based in Roseville, Minnesota, focusing on precision fluid handling solutions for analytical instrumentation. The company is renowned for its innovative products that enhance the efficiency and accuracy of various applications in the fields of chromatography and mass spectrometry. Rheodyne's technology is pivotal in supporting research and development across diverse sectors, including pharmaceuticals, environmental testing, and biotechnology, contributing to advancements in scientific analysis and quality control.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

20 Patents

#8 in Roseville, MN

#493 in Minnesota

#16,395 in US

#31,264 in the World

Roseville, MN (US)
Roseville, MN, United States of America

Rheodyne, LLC

Forward Citations = 653

16 inventors:

goldMedal Jon A Nichols (6 out of 13 patents)

silverMedal Yuri E Gerner (5 out of 42 patents)

bronzeMedal 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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Rheodyne, LLC. Retrieved from https://idiyas.com/company/rheodyne

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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