Growing community of inventors

Verona, PA, United States of America

John F Held

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 = 15

John F Held ↔ John F Butler (1 patent)John F Held ↔ John H Bucher (1 patent)John F HeldJohn F Held (1 patent)John F ButlerJohn F Butler (5 patents)John H BucherJohn H Bucher (3 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Jones & Laughlin Steel Corporation (1 from 34 patents)


1 patent:

1. 4289548 - High strength cold finished bars

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12/17/2025
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