Growing community of inventors

Houston, TX, United States of America

Horace A Johnson

Average Co-Inventor Count = 2.00

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 = 28

Horace A Johnson ↔ Roger Smith, Jr (1 patent)Horace A JohnsonHorace A Johnson (1 patent)Roger Smith, JrRoger Smith, Jr (5 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Hughes Tool Company LLC (1 from 301 patents)


1 patent:

1. 4589503 - Top drive drilling apparatus with improved wrench assembly

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as of
12/18/2025
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