Growing community of inventors

Andover, MN, United States of America

Roger J Hapka

Average Co-Inventor Count = 1.63

ph-index = 4

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 = 94

Roger J HapkaJeff Bennett (2 patents)Roger J HapkaBrett Gass (2 patents)Roger J HapkaLouis James Brady (1 patent)Roger J HapkaRyan K Lovold (1 patent)Roger J HapkaGary L Gustafson (1 patent)Roger J HapkaRoger J Hapka (4 patents)Jeff BennettJeff Bennett (3 patents)Brett GassBrett Gass (2 patents)Louis James BradyLouis James Brady (51 patents)Ryan K LovoldRyan K Lovold (14 patents)Gary L GustafsonGary L Gustafson (8 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Polaris Industries Inc. (4 from 884 patents)


4 patents:

1. 9358882 - Default open differential control switch

2. 8827025 - Default open differential control switch

3. 7316288 - All terrain vehicle with multiple steering modes

4. 7278511 - Controller for steering a vehicle

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as of
12/5/2025
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