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Bagley, MN, United States of America

Product Research and Development, Inc.

USPTO Granted Patents = 21

Forward Citations = 525

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9 inventors (with patents filed for the assignee):

E Dale Hartley (10 out of 23 patents)

Donald F Solomon (6 out of 16 patents)

F Scott Hartley (6 out of 13 patents)

4. Layne S Leishman (3 out of 4 patents)

5. Brian George Eck (1 out of 28 patents)

6. Shane Clair Okeson (1 out of 11 patents)

7. Michael Gunderson (1 out of 3 patents)

8. Richard K Olson (1 out of 1 patent)

9. John E Zerbey (1 out of 1 patent)

21 patents: Sort by Forward Citations

1. 6120399 - Continuously variable transmission driven element (2000-09-19),

2. 5380428 - Pump for reverse osmosis system (1995-01-10),

3. 5244361 - Pump for reverse osmosis system (1993-09-14),

4. 5193988 - Reverse osmosis system and automatic cycling booster pump therefor (1993-03-16),

5. 5154820 - Reverse osmosis system with cycled pressure intensifiers (1992-10-13),

6. 5125809 - Wobble plate pump (1992-06-30),

7. D323999 - Highway delineator guidepost (1992-02-18),

8. 5028166 - Highway guidepost (1991-07-02),

9. 5020605 - Post driver and methodology (1991-06-04),

10. 5000845 - Reverse osmosis system and automatic cycling booster pump therefor (1991-03-19),

11. 4995793 - Reverse osmosis system and automatic cycling booster pump therefor (1991-02-26),

12. 4827832 - Valve system for a reciprocating device (1989-05-09),

13. 4827831 - Reciprocating device and switching mechanism therefor (1989-05-09),

14. 4797069 - Pump with variable angle wobble plate (1989-01-10),

15. 4684332 - Ratio pump and method (1987-08-04),

Product Research and Development, Inc. is a leading company specializing in innovative product research and development services. We work with clients to bring their ideas to life, from concept development to prototyping and testing. Our team of experienced engineers and designers are dedicated to delivering high-quality and cost-effective solutions to meet our clients' needs.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

21 Patents

#2 in Bagley, MN

#457 in Minnesota

#15,187 in US

#29,088 in the World

Bagley, MN, United States of America

Product Research and Development, Inc.

Forward Citations = 525

9 inventors:

E Dale Hartley (10 out of 23 patents)

Donald F Solomon (6 out of 16 patents)

F Scott Hartley (6 out of 13 patents)

4. Layne S Leishman (3 out of 4 patents)

5. Brian George Eck (1 out of 28 patents)

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