Growing community of inventors

Houston, TX, United States of America

Darin H Duhporne

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 = 33

Darin H DuhporneJames M Critelli (1 patent)Darin H DuhporneWilliam C Blackman (1 patent)Darin H DuhporneEdgar Thomas Gilliam (1 patent)Darin H DuhporneJohn R Owen (1 patent)Darin H DuhporneDarin H Duhporne (1 patent)James M CritelliJames M Critelli (21 patents)William C BlackmanWilliam C Blackman (15 patents)Edgar Thomas GilliamEdgar Thomas Gilliam (13 patents)John R OwenJohn R Owen (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Cooper Brands, Inc. (1 from 48 patents)


1 patent:

1. 7159331 - Tape measure with extended standout

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1/8/2026
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