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For the Inventor, By the Inventor

Louisville, KY, United States of America

Grindmaster Corporation


USPTO Granted Patents = 57

% Expired Patents = 10.5


Trademarks = 14

Forward Citations = 1,119

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54 inventors (with patents filed for the assignee):

goldMedal Thomas Joseph Pfeifer (14 out of 19 patents)

silverMedal Brian D Newnan (11 out of 11 patents)

bronzeMedal 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:

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),
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 based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

Grindmaster Corporation
57 Patents

#13 in Louisville, KY

#26 in Kentucky

#6,244 in US

#12,552 in the World

Louisville, KY (US)
Louisville, KY, United States of America

Grindmaster Corporation

Forward Citations = 1,119

54 inventors:

goldMedal Thomas Joseph Pfeifer (14 out of 19 patents)

silverMedal Brian D Newnan (11 out of 11 patents)

bronzeMedal 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)

Please report any incorrect information to [email protected]
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