Growing community of inventors

McMurray, PA, United States of America

John D Sudbury

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 = 14

John D Sudbury ↔ Clyde W Zielke (1 patent)John D SudburyJohn D Sudbury (1 patent)Clyde W ZielkeClyde W Zielke (8 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Conoco Inc. (1 from 860 patents)


1 patent:

1. 4439304 - Process for beneficiating high sulfur, high fluidity coal

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12/18/2025
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