Growing community of inventors

Ida, MI, United States of America

Duane Michael Perpich

Average Co-Inventor Count = 4.00

ph-index = 2

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 = 29

Duane Michael PerpichDavid Collins (2 patents)Duane Michael PerpichDavid Emil Harnadek (2 patents)Duane Michael PerpichJonathan R Saul (1 patent)Duane Michael PerpichJonathon R Saul (1 patent)Duane Michael PerpichDuane Michael Perpich (2 patents)David CollinsDavid Collins (3 patents)David Emil HarnadekDavid Emil Harnadek (2 patents)Jonathan R SaulJonathan R Saul (41 patents)Jonathon R SaulJonathon R Saul (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. The Coleman Company, Inc. (2 from 487 patents)


2 patents:

1. 6406091 - Folding chair

2. 6364409 - Folding chair

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idiyas.com
as of
12/17/2025
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