For the Inventor, By the Inventor

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Westfield, IN, United States of America

P. L. Porter Co.

USPTO Granted Patents = 39

Trademarks = 4

Forward Citations = 770

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17 inventors (with patents filed for the assignee):

Clyde R Porter (15 out of 15 patents)

Calvin R Stringer (9 out of 11 patents)

Donald T Heckel, Jr (3 out of 5 patents)

4. Jim Zhuang (3 out of 3 patents)

5. Levik Kodaverdian (3 out of 3 patents)

6. Aki Tanaka (3 out of 3 patents)

7. Jimmy C-m Lee (3 out of 3 patents)

8. Kevin N Tribbett (2 out of 3 patents)

9. David E Landis (2 out of 3 patents)

10. George V Babiciuc (2 out of 2 patents)

11. James V Parrinello (1 out of 1 patent)

12. Greg Lawhead (1 out of 1 patent)

13. Scott Stiffler (1 out of 1 patent)

14. James O Eaton (1 out of 7 patents)

15. John Kourbetsos (1 out of 1 patent)

39 patents: Sort by Forward Citations

1. 6164419 - Mechanical seat lock with translating rod that does not rotate (2000-12-26),

2. 6161657 - Mechanical lock with a cam-driven locking pawl (2000-12-19),

3. 6116103 - Device for securing gear nut on actuator (2000-09-12),

4. 6106067 - Seat adjustment and dumping mechanism with memory adjustment coordinated (2000-08-22),

5. 6086155 - Rotary seat adjustment mechanism (2000-07-11),

6. 6003394 - Actuator that adjusts to side loads automatically by pivoting internally (1999-12-21),

7. 5887949 - Vehicle seat and system for controlling the same (1999-03-30),

8. 5819881 - Dual locking linear mechanical lock for high loads (1998-10-13),

9. 5806932 - Seat adjustment and dumping mechanism with memory of adjustment (1998-09-15),

10. 5794470 - Mechanical seat lock (1998-08-18),

11. 5778733 - Spinning nut linear mechanical lock (1998-07-14),

12. 5758544 - System and method for locking out an output device when an input device (1998-06-02),

13. 5755493 - Vehicle seat and system for controlling the same (1998-05-26),

14. 5706705 - Low profile push-button mechanical remote control (1998-01-13),

15. 5689995 - Actuator that adjusts to side loads automatically by pivoting internally (1997-11-25),

P. L. Porter Co. is a leading manufacturing company specializing in industrial machinery solutions. With over 50 years of experience, we provide innovative and reliable equipment for various industries such as manufacturing, food processing, and packaging. Our dedicated team of engineers and technicians work closely with clients to deliver customized solutions that optimize productivity and efficiency. Visit our website to explore our range of products and services.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

39 Patents

#2 in Westfield, IN

#138 in Indiana

#8,539 in US

#16,924 in the World

Westfield, IN, United States of America

P. L. Porter Co.

Forward Citations = 770

17 inventors:

Clyde R Porter (15 out of 15 patents)

Calvin R Stringer (9 out of 11 patents)

Donald T Heckel, Jr (3 out of 5 patents)

4. Jim Zhuang (3 out of 3 patents)

5. Levik Kodaverdian (3 out of 3 patents)

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