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For the Inventor, By the Inventor

Pittsburgh, PA, United States of America

Joy Manufacturing Company


USPTO Granted Patents = 171

Trademarks = 7

Forward Citations = 2,042

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143 inventors (with patents filed for the assignee):

goldMedal Edward A Bailey (14 out of 14 patents)

silverMedal George A Hibbard (8 out of 10 patents)

bronzeMedal Harley G Peterson (7 out of 8 patents)

4.  Neal W Densmore (6 out of 8 patents)

5.  Charles W Haynes (6 out of 11 patents)

6.  Louis H LeBlanc, Jr (6 out of 6 patents)

7.  Tri C Le (6 out of 8 patents)

8.  William S Shelton (5 out of 11 patents)

9.  Danny S Meyer (5 out of 14 patents)

10.  James F Ordway (5 out of 5 patents)

11.  Keith Hart (5 out of 17 patents)

12.  Ward D Morrison (4 out of 17 patents)

13.  G Robert Frey (4 out of 4 patents)

14.  F Harold Hollister (4 out of 4 patents)

15.  Everett L Coe, Jr (3 out of 10 patents)


Core Competencies:
Window Frame Components
Door Frame Components
Conveyor Belt Assembly
Continuous Miner
Valve Actuator
Hydraulic Actuators
Mining Equipment
Fluidized Bed Classifier
Gate Valve Technology
Sludge Processing
Bacterial Regeneration
High Pressure Sealing

171 patents:

1. D417291 - Window or door frame component (1999-11-30),
2. D408932 - Window or door frame adapter component (1999-04-27),
3. D408563 - Window or door frame component (1999-04-20),
4. D408088 - Combined header and sill frame component for a window or door (1999-04-13),
5. D408087 - Window or door frame corner component (1999-04-13),
6. 4852724 - Crawler-mounted conveying train (1989-08-01),
7. 4750274 - Sludge processing (1988-06-14),
8. 4682757 - Secondary backseat for gate valve (1987-07-28),
9. 4667813 - Conveyor belt chain (1987-05-26),
10. 4667812 - Conveyor belt assembly and method (1987-05-26),
11. 4658848 - Heat responsive backseat for gate valves (1987-04-21),
12. 4655507 - Continuous miner (1987-04-07),
13. 4651970 - Valve actuator with auxiliary energy storage means (1987-03-24),
14. 4650254 - Bit holder (1987-03-17),
15. 4650226 - Holddown screw (1987-03-17),
Joy Manufacturing Company is a leading provider of industrial machinery and equipment. With over 50 years of experience, we specialize in manufacturing heavy-duty machinery for various industries including mining, construction, and oil & gas. Our products are known for their durability, reliability, and innovative design. Visit our website to explore our wide range of machinery and learn more about our commitment to quality and customer satisfaction.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

171 Patents

#16 in Pittsburgh, PA

#94 in Pennsylvania

#2,260 in US

#4,709 in the World

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Pittsburgh, PA, United States of America

Joy Manufacturing Company

Forward Citations = 2,042

143 inventors:

goldMedal Edward A Bailey (14 out of 14 patents)

silverMedal George A Hibbard (8 out of 10 patents)

bronzeMedal Harley G Peterson (7 out of 8 patents)

4.  Neal W Densmore (6 out of 8 patents)

5.  Charles W Haynes (6 out of 11 patents)

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