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For the Inventor, By the Inventor

Schofield, WI, United States of America

Greenheck Fan Corporation


USPTO Granted Patents = 37

% Expired Patents = 10.8



Trademarks = 29

Forward Citations = 580

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47 inventors (with patents filed for the assignee):

goldMedal Shamus William Doran (8 out of 8 patents)

silverMedal Kyle Andrew Brownell (7 out of 7 patents)

bronzeMedal Emery W Neitzel (6 out of 6 patents)

4.  John Enzenroth (5 out of 5 patents)

5.  Michael Glenn Seliger (5 out of 5 patents)

6.  Vijaya Kumar Kollipara (5 out of 5 patents)

7.  Jared Clyde Wesenick (4 out of 4 patents)

8.  Terry Lee Hrdina (4 out of 4 patents)

9.  Scott James Koeppel (4 out of 4 patents)

10.  Timothy Ronald Mathson (4 out of 4 patents)

11.  Thomas Frank (4 out of 4 patents)

12.  Anthony J Rossi (4 out of 11 patents)

13.  Scott S Kurszewski (3 out of 3 patents)

14.  Kishor Kashinath Khankari (3 out of 3 patents)

15.  Edward G Legner (3 out of 3 patents)


Core Competencies:
Exhaust Fan
Fan Assembly
Airflow Balancing Valve
Indirect Gas Furnace
Centrifugal Fan
Variable-Volume Exhaust
Mixed Flow Fan
Damper Assembly
Two Stage Air Filter
Ventilation System
Heating System
Fan Housing

37 patents:

1. 12631194 - Exhaust fan (2026-05-19),
2. 12595806 - Efficient fan assembly (2026-04-07),
3. 12253096 - Fan assembly (2025-03-18),
4. 12085299 - Airflow balancing valve for HVAC systems (2024-09-10),
5. 11971047 - Efficient fan assembly (2024-04-30),
6. 11913460 - Exhaust fan (2024-02-27),
7. 11892098 - Airflow balancing valve with actuator (2024-02-06),
8. 11668314 - Efficient fan assembly (2023-06-06),
9. 11231040 - Fan assembly (2022-01-25),
10. 11168898 - Indirect gas furnace (2021-11-09),
11. 10330329 - Indirect gas furnace (2019-06-25),
12. 10184488 - Fan housing having flush mounted stator blades (2019-01-22),
13. 10125783 - Fan assembly and fan wheel assemblies (2018-11-13),
14. 10029289 - Variable-volume exhaust system (2018-07-24),
15. 10024329 - Fan assembly (2018-07-17),
Greenheck Fan Corporation, headquartered in Schofield, Wisconsin, specializes in the design and manufacture of air movement and control equipment. The company is recognized for its innovative solutions in ventilation, heating, cooling, and energy recovery systems, serving a wide range of industries including commercial, industrial, and institutional sectors. Greenheck is committed to advancing technology in air management, focusing on energy efficiency and sustainability in its product offerings.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

Greenheck Fan Corporation
37 Patents

#1 in Schofield, WI

#229 in Wisconsin

#9,251 in US

#18,260 in the World

Schofield, WI (US)
Schofield, WI, United States of America

Greenheck Fan Corporation

Forward Citations = 580

47 inventors:

goldMedal Shamus William Doran (8 out of 8 patents)

silverMedal Kyle Andrew Brownell (7 out of 7 patents)

bronzeMedal Emery W Neitzel (6 out of 6 patents)

4.  John Enzenroth (5 out of 5 patents)

5.  Michael Glenn Seliger (5 out of 5 patents)

Please report any incorrect information to [email protected]
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