Growing community of inventors

Clackamas, OR, United States of America

Doug Calvert

Average Co-Inventor Count = 5.00

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 = 0

Doug CalvertDarren G Fretz (1 patent)Doug CalvertEric Vaughn (1 patent)Doug CalvertBryon Borntrager (1 patent)Doug CalvertMichael Hojnacki (1 patent)Doug CalvertDoug Calvert (1 patent)Darren G FretzDarren G Fretz (78 patents)Eric VaughnEric Vaughn (13 patents)Bryon BorntragerBryon Borntrager (4 patents)Michael HojnackiMichael Hojnacki (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

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


1 patent:

1. D1091046 - Winch

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as of
12/16/2025
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