Growing community of inventors

Ann Arbor, MI, United States of America

H D H Showalter

Average Co-Inventor Count = 4.00

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 = 4

H D H Showalter ↔ William Alexander Denny (1 patent)H D H Showalter ↔ Gordon William Rewcastle (1 patent)H D H Showalter ↔ Roy Thomas Winters (1 patent)H D H ShowalterH D H Showalter (1 patent)William Alexander DennyWilliam Alexander Denny (73 patents)Gordon William RewcastleGordon William Rewcastle (33 patents)Roy Thomas WintersRoy Thomas Winters (8 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Warner-lambert Company (1 from 2,538 patents)


1 patent:

1. 6313292 - Process for preparing 4,6-disubstituted pyrido[3,4-d]pyrimidines

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1/5/2026
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