For the Inventor, By the Inventor

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Grand Rapids, MI, United States of America

Rapistan Corporation

USPTO Granted Patents = 23

Forward Citations = 727

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30 inventors (with patents filed for the assignee):

David H Cotter (3 out of 26 patents)

Bernard H Woltjer (3 out of 11 patents)

Wesley R Maxted (3 out of 3 patents)

4. Gerald A Brouwer (2 out of 20 patents)

5. Curtis E LeMay (2 out of 15 patents)

6. Martin R Doane (2 out of 4 patents)

7. Howard A Zollinger (2 out of 2 patents)

8. LeRoy Lubbers (2 out of 2 patents)

9. Charles W Saur (2 out of 7 patents)

10. Arthur J Terpstra, Jr (1 out of 3 patents)

11. Ahmad Khodor (1 out of 1 patent)

12. James P Kohls (1 out of 1 patent)

13. James P Kohls (1 out of 1 patent)

14. Ahmad Khodor (1 out of 1 patent)

15. Martin R Doane (1 out of 1 patent)

23 patents: Sort by Forward Citations

1. 5341916 - Controlled spacing induction (1994-08-30),

2. 5191967 - Conveyor system having non-singulating accumulation conveyor (1993-03-09),

3. 5135100 - Track intersection pin guide (1992-08-04),

4. 5101958 - Flowspitting conveyor (1992-04-07),

5. 5038912 - Vertically actuated transfer switch (1991-08-13),

6. 5038911 - Controlled spacing induction from plural lines (1991-08-13),

7. 4878578 - Split-cam conveyor rollers (1989-11-07),

8. 4738347 - Diverter shoe and diverting rail (1988-04-19),

9. 4329576 - Data storage means and reading system therefor (1982-05-11),

10. 4223780 - Accumulation conveyors (1980-09-23),

11. 4203370 - In-floor towline automatic re-entry spur (1980-05-20),

12. 4189273 - Modular warehouse conveyor system (1980-02-19),

13. 4181947 - Conveyor sorting system (1980-01-01),

14. 4074805 - Installation equipment with a driving mechanism (1978-02-21),

15. 4044897 - Conveyor sorting and orienting system (1977-08-30),

Rapistan Corporation is a leading provider of material handling solutions for warehouses and distribution centers. With over 50 years of experience, Rapistan offers a wide range of conveyor systems, sortation equipment, and automation technology to streamline operations and improve efficiency. Their innovative solutions help companies maximize productivity and reduce labor costs. Visit their website to learn more about Rapistan's cutting-edge 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

23 Patents

#25 in Grand Rapids, MI

#506 in Michigan

#13,925 in US

#26,790 in the World

Grand Rapids, MI, United States of America

Rapistan Corporation

Forward Citations = 727

30 inventors:

David H Cotter (3 out of 26 patents)

Bernard H Woltjer (3 out of 11 patents)

Wesley R Maxted (3 out of 3 patents)

4. Gerald A Brouwer (2 out of 20 patents)

5. Curtis E LeMay (2 out of 15 patents)

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