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For the Inventor, By the Inventor

Lake Bluff, IL, United States of America

Liquid Controls Corporation


USPTO Granted Patents = 13

% Expired Patents = 7.7


Trademarks = 27

Forward Citations = 58

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18 inventors (with patents filed for the assignee):

goldMedal James R Ruesch (3 out of 3 patents)

silverMedal Bryan P Haynes (3 out of 3 patents)

bronzeMedal William J Kolb, Iii (3 out of 3 patents)

4.  Don Crowder (1 out of 2 patents)

5.  Grant Davisson (1 out of 1 patent)

6.  Jeremy Patten (1 out of 1 patent)

7.  Vince Herr (1 out of 1 patent)

8.  James S Nerstrom (1 out of 10 patents)

9.  Thomas T Tschanz (1 out of 2 patents)

10.  Arthur J Degner (1 out of 1 patent)

11.  Wallace F Mitchell (1 out of 11 patents)

12.  Howard E Siebold (1 out of 1 patent)

13.  Karl O Laurel (1 out of 1 patent)

14.  Howard E Rittenhouse (1 out of 1 patent)

15.  Peter J Contoyanis (1 out of 1 patent)


13 patents:

1. 11788872 - Method and system for determination of liquid volumes (2023-10-17),
2. 10697453 - Liquid fuel delivery comprising a pump to deliver liquid fuel from a storage source to a delivery location and a controller mitigating power to operate the pump on the basis of a predetermined liquid threshold at the pump inlet (2020-06-30),
3. 8100023 - Rotary positive displacement flowmeter (2012-01-24),
4. 7765978 - Differential pressure sensor for fuel delivery systems (2010-08-03),
5. 7000628 - Electronic air separation system (2006-02-21),
6. 6535830 - Scaled quadrature pulse signal generator (2003-03-18),
7. 5808196 - Blocking rotor and housing for flow meter (1998-09-15),
8. 5513529 - Housing assembly for flow meter (1996-05-07),
9. 4258589 - Planetary adjuster (1981-03-31),
10. 4134175 - Non-rotating bushing (1979-01-16),
11. 4109525 - Maximum strength/weight fluid metering device (1978-08-29),
12. 4104511 - Safety interlock system for preset counters (1978-08-01),
13. 3973582 - Flexible band device (1976-08-10),
Company Overview
Liquid Controls Corporation, based in Lake Bluff, Illinois, specializes in the design and manufacture of precision flow measurement and control systems. The company focuses on providing innovative solutions for the liquid measurement industry, catering to sectors such as petroleum, chemical, and food processing. With a commitment to quality and accuracy, Liquid Controls develops advanced technologies that enhance operational efficiency and ensure compliance with industry standards, making it a key player in the global market for liquid handling solutions.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

13 Patents

#4 in Lake Bluff, IL

#1,183 in Illinois

#23,815 in US

#44,988 in the World

Lake Bluff, IL (US)
Lake Bluff, IL, United States of America

Liquid Controls Corporation

Forward Citations = 58

18 inventors:

goldMedal James R Ruesch (3 out of 3 patents)

silverMedal Bryan P Haynes (3 out of 3 patents)

bronzeMedal William J Kolb, Iii (3 out of 3 patents)

4.  Don Crowder (1 out of 2 patents)

5.  Grant Davisson (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Liquid Controls Corporation. Retrieved from https://idiyas.com/company/liquid-controls

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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