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For the Inventor, By the Inventor

Trumbull, CT, United States of America

The Nash Engineering Company


USPTO Granted Patents = 45

Forward Citations = 585

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29 inventors (with patents filed for the assignee):

goldMedal Harold K Haavik (14 out of 14 patents)

silverMedal Carl G Dudeck (9 out of 9 patents)

bronzeMedal 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:
Liquid Ring Pumps
Rotary Screw Pumps
Vacuum Pumps
Heat Recovery Systems
Gas Liquid Separation
Noise Control Mechanisms
Fluid Bearing Pads
Two-Stage Pumping Systems
Self-Priming Pumps
Compressor Technology
Monitoring Machinery
Ferrofluidic Rings

45 patents:

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),
The Nash Engineering Company specializes in designing and manufacturing advanced engineering solutions. With over 100 years of experience, we provide innovative products and services for various industries including oil and gas, chemical, and power. Our expertise lies in developing reliable and efficient liquid ring vacuum pumps, compressors, steam turbines, and systems. We are committed to delivering exceptional quality and customer satisfaction through our cutting-edge technology and dedicated team of professionals.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

45 Patents

#2 in Trumbull, CT

#179 in Connecticut

#7,499 in US

#14,979 in the World

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Trumbull, CT, United States of America

The Nash Engineering Company

Forward Citations = 585

29 inventors:

goldMedal Harold K Haavik (14 out of 14 patents)

silverMedal Carl G Dudeck (9 out of 9 patents)

bronzeMedal 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)

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