Growing community of inventors

Crookston, MN, United States of America

Roger G Janssen

Average Co-Inventor Count = 2.00

ph-index = 1

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 = 17

Roger G Janssen ↔ Wayne G Schantzen (1 patent)Roger G JanssenRoger G Janssen (1 patent)Wayne G SchantzenWayne G Schantzen (4 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (1 from 832,718 patents)


1 patent:

1. 3973808 - Ice stud for snowmobile tracks

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12/15/2025
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