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For the Inventor, By the Inventor

Louisville, KY, United States of America

Grindmaster Corporation


USPTO Granted Patents = 57


Trademarks = 18

Forward Citations = 1,089

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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
Portable Beverage Dispenser
Chilled Beverage Dispenser
Coffee Grinder
Beverage Brewer
Agitator Assembly
Virtual Sight Glass
Moisture Prevention Valve
Combination Grinder And Brewer
Pump Assembly
Adjustable Flow Rate
Electrostatic Charge Dissipator

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 is a leading manufacturer of beverage equipment, providing innovative solutions for the coffee and tea industry. With a rich history spanning over 100 years, Grindmaster has been at the forefront of developing state-of-the-art coffee grinders, brewers, and dispensing systems. Our products are known for their exceptional quality, reliability, and performance. Visit our website to explore our wide range of commercial coffee and tea equipment.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 23 2025

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57 Patents

#13 in Louisville, KY

#24 in Kentucky

#6,032 in US

#12,160 in the World

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Louisville, KY, United States of America

Grindmaster Corporation

Forward Citations = 1,089

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)

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