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For the Inventor, By the Inventor

Fairport, NY, United States of America

Qualitrol Corporation


USPTO Granted Patents = 25

% Expired Patents = 4.0


Forward Citations = 195

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14 inventors (with patents filed for the assignee):

goldMedal Robert F Romanowski (5 out of 9 patents)

silverMedal Joseph F Foster (5 out of 5 patents)

bronzeMedal Joshua J Herz (4 out of 9 patents)

4.  Wendell D Johnson (4 out of 4 patents)

5.  Richard E Hagerman (3 out of 4 patents)

6.  John R Bodker (2 out of 2 patents)

7.  Yuvi Kahana (1 out of 4 patents)

8.  Alexander Kots (1 out of 19 patents)

9.  Alexander Paritsky (1 out of 21 patents)

10.  Todd-Michael Balan (1 out of 1 patent)

11.  William H Schneider (1 out of 2 patents)

12.  Italo Di Domenico (1 out of 1 patent)

13.  David L Billings (1 out of 4 patents)

14.  Raymond T Blythe (1 out of 1 patent)


Core Competencies:
Fiber Optic Sensor
Transformer Monitoring
Pressure Relief Device
Temperature Controller
Gasket Assembly
Hot Spot Thermometer
Flow Switch
Liquid Level Gauge
Bellows Relay
Snap Over Lens
Rotary Instrument

25 patents:

1. 8995798 - Reflective element for fiber optic sensor (2015-03-31),
2. 7377689 - Transformer temperature monitoring and control (2008-05-27),
3. 7210497 - Pressure relief device with increased flow rate (2007-05-01),
4. 7111637 - Enclosure system for pressure relief device (2006-09-26),
5. 6497248 - Pressure relief device with one piece gasket (2002-12-24),
6. 5937893 - Shield for pressure relief device (1999-08-17),
7. 4843187 - Gasket assembly and electrical power transformer including the same (1989-06-27),
8. 4823224 - Rapid pressure rise circuit (1989-04-18),
9. 4775245 - Multi-phase electronic temperature controller (1988-10-04),
10. 4754405 - Tri-phase electronic temperature controller (1988-06-28),
11. 4745571 - Modular electronic temperature controller (1988-05-17),
12. 4733974 - Transformer life consumption indicator (1988-03-29),
13. 4717882 - Snap over lens assembly (1988-01-05),
14. 4676266 - Pressure relief device (1987-06-30),
15. D287701 - Electronic temperature monitor (1987-01-13),
Company Overview
Qualitrol Corporation, headquartered in Fairport, NY, specializes in advanced monitoring and diagnostic solutions for critical assets in the electric utility and industrial sectors. The company focuses on developing technologies that enhance the reliability and efficiency of power systems, including condition monitoring equipment and software analytics. With a commitment to innovation, Qualitrol plays a vital role in supporting the global transition to smarter, more resilient energy infrastructure.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

25 Patents

#3 in Fairport, NY

#787 in New York

#13,350 in US

#25,681 in the World

Fairport, NY (US)
Fairport, NY, United States of America

Qualitrol Corporation

Forward Citations = 195

14 inventors:

goldMedal Robert F Romanowski (5 out of 9 patents)

silverMedal Joseph F Foster (5 out of 5 patents)

bronzeMedal Joshua J Herz (4 out of 9 patents)

4.  Wendell D Johnson (4 out of 4 patents)

5.  Richard E Hagerman (3 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Qualitrol Corporation. Retrieved from https://idiyas.com/company/qualitrol

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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