logo

For the Inventor, By the Inventor

Cranston, RI, United States of America

Grinnell Corporation


USPTO Granted Patents = 42

% Expired Patents = 2.4



Trademarks = 19

Forward Citations = 1,412

Loading Chart...
Loading Chart...

27 inventors (with patents filed for the assignee):

goldMedal Michael A Fischer (11 out of 33 patents)

silverMedal Yoram Ringer (7 out of 65 patents)

bronzeMedal James W Mears (5 out of 20 patents)

4.  Leo William Fleury, Jr (5 out of 22 patents)

5.  Donald B Pounder (3 out of 17 patents)

6.  Michael W Horgan (3 out of 11 patents)

7.  James M Martin (3 out of 8 patents)

8.  James F Martin (3 out of 3 patents)

9.  Sandra M Lippka (2 out of 22 patents)

10.  David J LeBlanc (2 out of 2 patents)

11.  Jerome S Pepi (2 out of 6 patents)

12.  Charles N Chatterley (2 out of 2 patents)

13.  Michael A Fishcer (2 out of 2 patents)

14.  Gregory Fuchs (2 out of 2 patents)

15.  Robert J Poleshuk (2 out of 2 patents)


Core Competencies:
Dry Pipe Valve
Fire Protection Sprinkler
Upright Nozzle
Automatic Shutoff
Check Valve
Deflector
Water Meter
Pipe Hanger
Pendent Diffuser
Sprinkler Head
Flow Indicator
Cold Rolling

42 patents:

1. 7814983 - Dry pipe valve for fire protection sprinkler system (2010-10-19),
2. 7322423 - Dry pipe valve for fire protection sprinkler system (2008-01-29),
3. 7165624 - Early suppression fast response fire protection sprinkler (2007-01-23),
4. 7104333 - Dry pipe valve for fire protection sprinkler system (2006-09-12),
5. 6976543 - Low pressure, extended coverage, upright fire protection sprinkler (2005-12-20),
6. 6810963 - Dry pipe valve for fire protection sprinkler system (2004-11-02),
7. 6726119 - Upright fire protection nozzle (2004-04-27),
8. 6557645 - Dry pipe valve for fire protection sprinkler system (2003-05-06),
9. 6454017 - Upright fire protection nozzle (2002-09-24),
10. 6357467 - Automatic water supply shutoff valve (2002-03-19),
11. 6318564 - Strainer (2001-11-20),
12. 6308784 - Flush sprinkler (2001-10-30),
13. 6123153 - Fire protection sprinkle and release mechanism (2000-09-26),
14. 6059044 - Fire protection sprinkler and deflector (2000-05-09),
15. 6013150 - Article tagging apparatus and method (2000-01-11),
Grinnell Corporation, headquartered in Cranston, RI, specializes in fire protection solutions, focusing on the development and manufacturing of essential components for fire suppression systems. Their product range includes fire protection sprinklers, dry pipe valves, and various types of nozzles and valves designed to ensure effective fire safety and compliance. With a commitment to innovation, Grinnell plays a vital role in enhancing fire protection standards across various industries, contributing to safer environments through advanced technology.
Profile summary based on public USPTO records.

logo

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

Grinnell Corporation
42 Patents

#4 in Cranston, RI

#49 in Rhode Island

#8,253 in US

#16,338 in the World

Cranston, RI (US)
Cranston, RI, United States of America

Grinnell Corporation

Forward Citations = 1,412

27 inventors:

goldMedal Michael A Fischer (11 out of 33 patents)

silverMedal Yoram Ringer (7 out of 65 patents)

bronzeMedal James W Mears (5 out of 20 patents)

4.  Leo William Fleury, Jr (5 out of 22 patents)

5.  Donald B Pounder (3 out of 17 patents)

Please report any incorrect information to [email protected]
Loading…