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Ft. Worth, TX, United States of America

Harold Y Walker, Jr

Average Co-Inventor Count = 3.00

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 = 1

Harold Y Walker, Jr ↔ Paul M Hamilton (1 patent)Harold Y Walker, Jr ↔ David Underwood (1 patent)Harold Y Walker, JrHarold Y Walker, Jr (1 patent)Paul M HamiltonPaul M Hamilton (11 patents)David UnderwoodDavid Underwood (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sigmapro Engineering and Manufacturing, LLC (1 from 1 patent)


1 patent:

1. 9116315 - Shielded barrel

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as of
12/5/2025
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