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Louisville, KY, United States of America

Grindmaster Corporation

Calculating rank

USPTO Granted Patents = 57

% Expired Patents = 10.5

EPO Patents = 1

Trademarks = 14

Forward Citations = 1,145

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54 inventors (with patents filed for the assignee):

Thomas Joseph Pfeifer (14 out of 19 patents)

Brian D Newnan (11 out of 11 patents)

Robert C McNeill (6 out of 9 patents)

4. Errin Whitney Gnadinger (5 out of 32 patents)

5. William Alexis Dahmen (4 out of 5 patents)

6. Richard Leon Sipp (4 out of 4 patents)

7. Robert Michael Ench (3 out of 3 patents)

8. Curry Joseph Cates (3 out of 3 patents)

9. Michael J Edrington (3 out of 3 patents)

10. Charles M Fisher (3 out of 3 patents)

11. Brian D Newman (3 out of 3 patents)

12. Timothy David Gantt (2 out of 7 patents)

13. Jose G Avendano (2 out of 2 patents)

14. Krzysztof Struminski (2 out of 8 patents)

15. Kenton J Graviss (2 out of 5 patents)

Core Competencies:

Beverage Dispensing

Chilled Beverage Dispenser

Virtual Sight Glass

Brew Basket

Coffee Grinder

Agitator Assembly

Pump Assembly

Combination Brewer

Coffee Airpot

Moisture Prevention Valve

Single Hopper Grinder

Adjustable Flow Rate

57 patents: Sort by Forward Citations

1. 11206942 - Virtual sight glass for a portable beverage dispensing container (2021-12-28),

2. 10492639 - Convective heating system for a portable beverage dispensing container (2019-12-03),

3. 10390648 - Virtual sight glass for a portable beverage dispensing container (2019-08-27),

4. 10376094 - Agitator assembly for a portable beverage dispensing container (2019-08-13),

5. D838540 - Beverage dispenser (2019-01-22),

6. D838530 - Beverage dispenser (2019-01-22),

7. D838529 - Beverage dispenser (2019-01-22),

8. 10087669 - Front door assembly for beverage dispenser (2018-10-02),

9. 9868626 - Beverage dispenser (2018-01-16),

10. 9795248 - Brew basket with adjustable flow rate (2017-10-24),

11. 9764936 - Chilled beverage dispenser (2017-09-19),

12. 9730548 - Funnel assembly for a beverage brewer (2017-08-15),

13. D792730 - Beverage dispenser (2017-07-25),

14. D789133 - Beverage dispenser (2017-06-13),

15. 9326529 - Beverage dispenser for partially frozen beverages with an improved drive and sealing system (2016-05-03),

Company Overview

Grindmaster Corporation, based in Louisville, KY, specializes in innovative beverage dispensing solutions. The company develops a range of products including chilled beverage dispensers, coffee grinders, and combination brewers, catering to the needs of the foodservice and hospitality industries. With a focus on advanced technologies such as virtual sight glass and efficient pump assemblies, Grindmaster is committed to enhancing beverage preparation and serving efficiency, ensuring quality and consistency in every cup.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

57 Patents

#13 in Louisville, KY

#26 in Kentucky

#6,254 in US

#12,581 in the World

Louisville, KY, United States of America

Grindmaster Corporation

Forward Citations = 1,145

54 inventors:

Thomas Joseph Pfeifer (14 out of 19 patents)

Brian D Newnan (11 out of 11 patents)

Robert C McNeill (6 out of 9 patents)

4. Errin Whitney Gnadinger (5 out of 32 patents)

5. William Alexis Dahmen (4 out of 5 patents)

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

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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