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Norwalk, CT, United States of America

The Nash Engineering Company

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USPTO Granted Patents = 45

Forward Citations = 603

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29 inventors (with patents filed for the assignee):

Harold K Haavik (14 out of 14 patents)

Carl G Dudeck (9 out of 9 patents)

Ole B Olsen (5 out of 5 patents)

4. Thomas R Dardis (4 out of 4 patents)

5. Richard G Cadotte (4 out of 4 patents)

6. Charles M Jozepaitis (4 out of 4 patents)

7. Ramesh Balkunge Shenoi (3 out of 8 patents)

8. Douglas E Bissell (3 out of 3 patents)

9. Stephen J King (3 out of 4 patents)

10. Richard A Lametto (3 out of 3 patents)

11. Douglas Frederick Sweet (2 out of 2 patents)

12. Herbert H Johnson (2 out of 3 patents)

13. Charles W Bilik (2 out of 2 patents)

14. Walter J Schultze (2 out of 2 patents)

15. Andrew Cecil Harvey (1 out of 63 patents)

Core Competencies:

Rotary Screw Pump

Liquid Ring Vacuum

Temperature Monitoring

Gas Separation

Fluid Bearing

Noise Control

Two-Stage Pump

Ferrofluidic Ring

Self-Priming

Compressor Systems

Pumping Efficiency

Machinery Monitoring

45 patents: Sort by Forward Citations

1. 6394777 - Cooling gas in a rotary screw type pump (2002-05-28),

2. 6354808 - Modular liquid ring vacuum pumps and compressors (2002-03-12),

3. 6104987 - System for monitoring dryer drum temperatures (2000-08-15),

4. 5961295 - Mixed flow liquid ring pumps (1999-10-05),

5. 5899668 - Two-stage liquid ring pumps having separate gas and liquid inlets to the (1999-05-04),

6. D405096 - Pump (1999-02-02),

7. 5653582 - Fluid bearing pad arrangement for liquid ring pump systems (1997-08-05),

8. 5507625 - Liquid ring pumps (1996-04-16),

9. 5469705 - Heat recovery in a liquid ring pump seal liquid chiller system (1995-11-28),

10. 5427685 - Separator for separating gas from a liquid (1995-06-27),

11. 5395215 - Supports for rotatable housing of liquid ring pumps (1995-03-07),

12. 5370502 - Liquid ring pumps with pressurized gas supported rotating liners (1994-12-06),

13. 5356268 - Check valve structures for liquid ring pumps (1994-10-18),

14. 5295794 - Liquid ring pumps with rotating liners (1994-03-22),

15. 5217352 - Two-stage liquid ring pump with rotating liner in first stage supported (1993-06-08),

Company Overview

The Nash Engineering Company, based in Norwalk, CT, specializes in the development and manufacturing of advanced pumping solutions. The company focuses on liquid ring pumps, rotary screw pumps, and vacuum pumps, catering to a variety of industrial applications. Additionally, Nash is recognized for its expertise in heat recovery systems, gas-liquid separation technologies, and noise control mechanisms. Their innovative designs also include fluid bearing pads and two-stage pumping systems, enhancing efficiency and performance across diverse sectors.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

45 Patents

#14 in Norwalk, CT

#203 in Connecticut

#7,791 in US

#15,458 in the World

Norwalk, CT, United States of America

The Nash Engineering Company

Forward Citations = 603

29 inventors:

Harold K Haavik (14 out of 14 patents)

Carl G Dudeck (9 out of 9 patents)

Ole B Olsen (5 out of 5 patents)

4. Thomas R Dardis (4 out of 4 patents)

5. Richard G Cadotte (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: The Nash Engineering Company. Retrieved from https://idiyas.com/company/nash-engineering-company

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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