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For the Inventor, By the Inventor

Warrendale, PA, United States of America

Joy Global Underground Mining LLC


USPTO Granted Patents = 133



Trademarks = 14

Forward Citations = 180

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131 inventors (with patents filed for the assignee):

goldMedal Christopher George Stewart (12 out of 16 patents)

silverMedal Peter A Lugg (11 out of 13 patents)

bronzeMedal Geoffrey W Keech (11 out of 12 patents)

4.  Nagy Daher (10 out of 10 patents)

5.  Aaron Philip Walker (10 out of 10 patents)

6.  Edward F Niederriter (9 out of 20 patents)

7.  Gareth Rimmington (9 out of 16 patents)

8.  Joaquim Antonio Soares De Sousa (8 out of 8 patents)

9.  Michael L O'Neill (7 out of 33 patents)

10.  Richard Boyd (6 out of 9 patents)

11.  Bradley M Neilson (6 out of 7 patents)

12.  Peter Hanna (6 out of 6 patents)

13.  Andrew P De Lore (6 out of 14 patents)

14.  Stuart Reeves (5 out of 5 patents)

15.  Jeffrey A Ley (5 out of 6 patents)


Core Competencies:
Mining Machine
Cutter Head
Beam Stageloader
Drilling Tool
Bolting Device
Chain Conveyor
Rock Cutting Device
Impact Sensor
Roof Support
Automated Control
Sensor Systems
Material Handling

133 patents:

1. 12472770 - Coupling between a steerable wheel and a housing in a vehicle wheel unit (2025-11-18),
2. 12391484 - Systems and methods for automated control of a beam stageloader bootend (2025-08-19),
3. 12391483 - Systems and methods for automated control of a beam stageloader bootend (2025-08-19),
4. 12385395 - Cutter head for mining machine (2025-08-12),
5. 12378883 - Guide shoe for mining machine (2025-08-05),
6. 12366163 - Support for drilling and bolting tool (2025-07-22),
7. 12291968 - Bolter (2025-05-06),
8. 12180835 - Screen handling system (2024-12-31),
9. 12065009 - Bearing assembly for a wheel unit (2024-08-20),
10. 12025003 - Support for drilling and bolting tool (2024-07-02),
11. 12017859 - Systems and methods for automated control of a beam stageloader bootend (2024-06-25),
12. 12017858 - Systems and methods for automated control of a beam stageloader bootend (2024-06-25),
13. 12006824 - Cutting assembly for longwall mining system (2024-06-11),
14. 11939868 - Cutting device and support for same (2024-03-26),
15. 11858745 - Chain conveyor and link for same (2024-01-02),
Joy Global Underground Mining LLC is a leading manufacturer and supplier of underground mining equipment and services. With a diverse portfolio of products including longwall systems, continuous miners, haulage systems, and more, the company is committed to providing innovative solutions to enhance productivity and safety in underground mining operations.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

133 Patents

#1 in Warrendale, PA

#114 in Pennsylvania

#2,802 in US

#5,894 in the World

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Warrendale, PA, United States of America

Joy Global Underground Mining LLC

Forward Citations = 180

131 inventors:

goldMedal Christopher George Stewart (12 out of 16 patents)

silverMedal Peter A Lugg (11 out of 13 patents)

bronzeMedal Geoffrey W Keech (11 out of 12 patents)

4.  Nagy Daher (10 out of 10 patents)

5.  Aaron Philip Walker (10 out of 10 patents)

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