Growing community of inventors

Houston, TX, United States of America

William M Ehrhardt

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 = 13

William M Ehrhardt ↔ Earl Jon Haury (1 patent)William M EhrhardtWilliam M Ehrhardt (1 patent)Earl Jon HauryEarl Jon Haury (4 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Shell Oil Comapny (1 from 7,646 patents)


1 patent:

1. 4243007 - Selective ignition timing

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12/29/2025
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