For the Inventor, By the Inventor

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Grand Rapids, MI, United States of America

Hart & Cooley, Inc.

Calculating rank

USPTO Granted Patents = 14

% Expired Patents = 7.1

Trademarks = 15

Forward Citations = 85

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18 inventors (with patents filed for the assignee):

Roger P Engelke (4 out of 4 patents)

Johan K Rademaker (4 out of 4 patents)

Clark E Pridemore (2 out of 4 patents)

4. Glen A Edgar (1 out of 3 patents)

5. Keith E Page (1 out of 1 patent)

6. Eric Kipker (1 out of 1 patent)

7. Michael Lutz (1 out of 1 patent)

8. Alexander M Prociv (1 out of 1 patent)

9. Tiburcio Hernandez, Jr (1 out of 1 patent)

10. Justin Johnston (1 out of 1 patent)

11. David Wormmeester (1 out of 1 patent)

12. Leon Lietch (1 out of 1 patent)

13. Steve Brandsen (1 out of 1 patent)

14. Russell L Ver Brugge (1 out of 1 patent)

15. Jeff L Lampen (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 9441852 - Prefabricated, modular, fire resistance and non-fire resistance rated ventilation duct assembly with integral subducts (2016-09-13),

2. 8317235 - Flange cleat and method (2012-11-27),

3. 6270401 - Air diffuser with unitary valve assembly (2001-08-07),

4. 6135137 - Indexed coupler for positioning a shaft in multiple angular positions (2000-10-24),

5. 6087639 - Heating coil retainer bracket and method for manufacturing the same (2000-07-11),

6. 6079187 - Apparatus for packaging flexible duct for shipment and method for (2000-06-27),

7. D403752 - Vent cap (1999-01-05),

8. 5578232 - Open-coil heater assembly and insulator therefor (1996-11-26),

9. D367844 - Heater insulator (1996-03-12),

10. 5346130 - Thermally responsive air diffuser (1994-09-13),

11. D331102 - Combined ceiling diffuser and air deflector pendulum for providing (1992-11-17),

12. 5015015 - Clip securing arrangement for ventilation systems (1991-05-14),

13. 4876951 - Air register handle arrangement (1989-10-31),

14. 4815934 - Air deflector arrangement (1989-03-28),

Company Overview

Hart & Cooley, Inc. is a leading manufacturer specializing in innovative ventilation and air distribution products. Based in Grand Rapids, Michigan, the company focuses on developing solutions that enhance indoor air quality and energy efficiency for residential and commercial applications. With a commitment to engineering excellence, Hart & Cooley integrates advanced technology into its product lines, catering to the evolving needs of the HVAC industry while ensuring compliance with environmental standards.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

14 Patents

#46 in Grand Rapids, MI

#790 in Michigan

#22,344 in US

#42,312 in the World

Grand Rapids, MI, United States of America

Hart & Cooley, Inc.

Forward Citations = 85

18 inventors:

Roger P Engelke (4 out of 4 patents)

Johan K Rademaker (4 out of 4 patents)

Clark E Pridemore (2 out of 4 patents)

4. Glen A Edgar (1 out of 3 patents)

5. Keith E Page (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hart & Cooley, Inc.. Retrieved from https://idiyas.com/company/hart-and-cooley

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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