Growing community of inventors

Farmington, MN, United States of America

Randall Allen Engelland

Average Co-Inventor Count = 5.00

ph-index = 10

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 704

Randall Allen EngellandThomas Richard Olson (14 patents)Randall Allen EngellandRichard Lawrence Suydam (14 patents)Randall Allen EngellandGary Ray Gillingham (13 patents)Randall Allen EngellandJim C Rothman (12 patents)Randall Allen EngellandRobert Widerski (2 patents)Randall Allen EngellandGary Ray Gilingham (1 patent)Randall Allen EngellandRandall Allen Engelland (14 patents)Thomas Richard OlsonThomas Richard Olson (29 patents)Richard Lawrence SuydamRichard Lawrence Suydam (14 patents)Gary Ray GillinghamGary Ray Gillingham (69 patents)Jim C RothmanJim C Rothman (29 patents)Robert WiderskiRobert Widerski (7 patents)Gary Ray GilinghamGary Ray Gilingham (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Donaldson Comapny, Inc. (14 from 1,404 patents)


14 patents:

1. 11318408 - Air cleaner arrangements; serviceable filter elements; and, methods

2. 10589209 - Air cleaner arrangements; serviceable filter elements; and, methods

3. 10010825 - Air cleaner arrangements; serviceable filter elements; and, methods

4. 9217399 - Air cleaner arrangements; serviceable filter elements; and, methods

5. RE45588 - Air cleaner arrangements; serviceable filter elements; and, methods

6. 8808417 - Air cleaner arrangements; serviceable filter elements; and, methods

7. 8382876 - Air cleaner arrangement; serviceable filter cartridge; and, methods

8. 8382875 - Air cleaner arrangements; serviceable filter elements; and, methods

9. 8147582 - Air cleaner arrangements; serviceable filter elements; and, methods

10. 8048188 - Air cleaner arrangements; serviceable filter cartridge; and, methods

11. 7972405 - Air cleaner arrangements; serviceable filter elements; and, methods

12. 7682416 - Air cleaner arrangements; serviceable filter elements; and, methods

13. 7351270 - Air cleaner arrangements; serviceable filter elements; and, methods

14. 7323029 - Air cleaner arrangements; serviceable filter elements; and, methods

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12/16/2025
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