Growing community of inventors

Portland, OR, United States of America

Darren K Johnson

Average Co-Inventor Count = 3.00

ph-index = 3

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 = 61

Darren K JohnsonBryon M Borntrager (2 patents)Darren K JohnsonRonald Lee Elliott (2 patents)Darren K JohnsonBryan Yoder (1 patent)Darren K JohnsonErik O Roe (1 patent)Darren K JohnsonDarren K Johnson (3 patents)Bryon M BorntragerBryon M Borntrager (14 patents)Ronald Lee ElliottRonald Lee Elliott (13 patents)Bryan YoderBryan Yoder (16 patents)Erik O RoeErik O Roe (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Warn Industries, Inc. (3 from 196 patents)


3 patents:

1. 7703751 - Winch assembly including clutch mechanism

2. 7588233 - Winch assembly including clutch mechanism

3. D555874 - Winch

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as of
1/3/2026
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