Growing community of inventors

Birmingham, AL, United States of America

John W Stevenson

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 = 31

John W Stevenson ↔ James A Berry (1 patent)John W Stevenson ↔ Morton Sherman (1 patent)John W StevensonJohn W Stevenson (1 patent)James A BerryJames A Berry (5 patents)Morton ShermanMorton Sherman (4 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. The Celotex Corporation (1 from 127 patents)


1 patent:

1. 4516879 - Foam slabs in mine tunnel stoppings

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12/20/2025
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