For the Inventor, By the Inventor

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Pottstown, PA, United States of America

Neapco, Inc.

USPTO Granted Patents = 17

Trademarks = 2

Forward Citations = 256

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14 inventors (with patents filed for the assignee):

Harold R Diffenderfer (5 out of 5 patents)

James C Stiles (3 out of 3 patents)

Bradley S Kurian (3 out of 3 patents)

4. George S Rowley (3 out of 3 patents)

5. Michael J Jones (2 out of 2 patents)

6. Michael J Rogers (2 out of 2 patents)

7. Luther Gates (1 out of 2 patents)

8. Joseph W Lonergan, Iii (1 out of 1 patent)

9. Lou R Huis (1 out of 1 patent)

10. William Podbutzky (1 out of 1 patent)

11. Rifka Cholakon (1 out of 1 patent)

12. Russell M Lightcap (1 out of 1 patent)

13. Jeffrey A Guthrie (1 out of 1 patent)

14. Philip J Dommel (1 out of 1 patent)

17 patents: Sort by Forward Citations

1. 8382595 - Torque limiting driveline (2013-02-26),

2. 8187107 - Push button quick disconnect yoke (2012-05-29),

3. 6585444 - Quick-release coupler (2003-07-01),

4. 6425605 - Shaft assembly capable of length variation and having minimal rotational backlash and minimal sliding resistance (2002-07-30),

5. 6241616 - Variable length double telescoping drive shaft assembly (2001-06-05),

6. 6059663 - One-piece sealing system for a universal joint assembly (2000-05-09),

7. 6050899 - Sealing system for a universal joint assembly (2000-04-18),

8. 5938534 - Radial free motion driveline (1999-08-17),

9. 5827122 - Radial free motion driveline (1998-10-27),

10. 5762556 - Adjustable free motion clutch (1998-06-09),

11. 5601380 - Quick disconnect coupling device (1997-02-11),

12. 4859110 - Automatic coupling device (1989-08-22),

13. 4669737 - Annular shaft seal with cam portion on sealing lip (1987-06-02),

14. 4622840 - Method for drawing telescoping tubes for torque transmission (1986-11-18),

15. 4622022 - Telescoping tubes for torque transmission (1986-11-11),

Neapco is a leading supplier of driveline systems for off-highway vehicles, commercial vehicles, and light vehicles. With over 100 years of experience, Neapco offers a wide range of products including drive shafts, differentials, and more. The company is known for its high-quality and innovative solutions for the automotive industry.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

17 Patents

#1 in Pottstown, PA

#683 in Pennsylvania

#18,307 in US

#34,831 in the World

Pottstown, PA, United States of America

Neapco, Inc.

Forward Citations = 256

14 inventors:

Harold R Diffenderfer (5 out of 5 patents)

James C Stiles (3 out of 3 patents)

Bradley S Kurian (3 out of 3 patents)

4. George S Rowley (3 out of 3 patents)

5. Michael J Jones (2 out of 2 patents)

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