Growing community of inventors

Raleigh, NC, United States of America

William C Humphrey

Average Co-Inventor Count = 1.33

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 = 2

William C HumphreyDavid S Chapin (1 patent)William C HumphreyRandy L Burke (1 patent)William C HumphreyWilliam C Humphrey (4 patents)David S ChapinDavid S Chapin (41 patents)Randy L BurkeRandy L Burke (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Southern Case, Inc. (2 from 27 patents)

2. Cooper Industries, Inc. (1 from 901 patents)

3. Burke; Randy L. (1 from 1 patent)


4 patents:

1. D339361 - Hopper for sandblasting machine

2. D338927 - Kite controller

3. D332456 - Wheeled hopper for sandblasting machine

4. D308136 - Base for storing and carrying a propane torch and accessories

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as of
12/30/2025
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