For the Inventor, By the Inventor

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Hillsboro, OH, United States of America

Rotron, Inc.

USPTO Granted Patents = 18

Trademarks = 5

Forward Citations = 389

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18 inventors (with patents filed for the assignee):

Fred A Brown (5 out of 33 patents)

Alan F Grouse (3 out of 3 patents)

Todd J Kazmirski (2 out of 2 patents)

4. Bruce Singleton (2 out of 2 patents)

5. Wayne D Kant (2 out of 2 patents)

6. Norman Smith (2 out of 3 patents)

7. James Reffelt (2 out of 2 patents)

8. Gary R Leeth (1 out of 1 patent)

9. C Richard Burkard (1 out of 1 patent)

10. Vladimir Brunstein (1 out of 1 patent)

11. Ralph Prete (1 out of 2 patents)

12. Jay Patel (1 out of 1 patent)

13. Wharton McDaniel (1 out of 1 patent)

14. Donald Thompson (1 out of 1 patent)

15. John W Ebbs (1 out of 1 patent)

18 patents: Sort by Forward Citations

1. 6453504 - Power driven wiper system for outside vehicle mirrors (2002-09-24),

2. 5656494 - Biofilter with modular trays (1997-08-12),

3. 5595910 - Biofilter with modular trays (1997-01-21),

4. 5546295 - Electrical power converter, power supply, and inverter with (1996-08-13),

5. 5117167 - Commutating energy suppression circuit for an electronically commutated (1992-05-26),

6. 4845411 - Brushless DC motor and encoding technique (1989-07-04),

7. 4633110 - Motor with stator on printed circuit assembly (1986-12-30),

8. 4618806 - Ironless, brushless DC motor with wave-winding (1986-10-21),

9. 4564793 - Brushless DC motor with improved starting (1986-01-14),

10. 4563622 - Simple brushless DC fan motor (1986-01-07),

11. 4553075 - Simple brushless DC fan motor with reversing field (1985-11-12),

12. 4542768 - Pressure relief valve (1985-09-24),

13. 4506218 - Condition sensing arrangement for ac machines (1985-03-19),

14. 4494028 - Integral coaxial commutation and rotor magnets and apparatus and method (1985-01-15),

15. 4484114 - Self-starting brushless DC motor (1984-11-20),

Rotron, Inc. specializes in the design and manufacture of high-performance cooling fans and blowers for various industries including aerospace, defense, and telecommunications. With over 70 years of experience, Rotron is known for innovative designs and reliable products that meet the demanding requirements of its customers. The company is committed to providing top-quality products and unparalleled customer service.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

18 Patents

#1 in Hillsboro, OH

#732 in Ohio

#17,382 in US

#33,147 in the World

Hillsboro, OH, United States of America

Rotron, Inc.

Forward Citations = 389

18 inventors:

Fred A Brown (5 out of 33 patents)

Alan F Grouse (3 out of 3 patents)

Todd J Kazmirski (2 out of 2 patents)

4. Bruce Singleton (2 out of 2 patents)

5. Wayne D Kant (2 out of 2 patents)

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