Growing community of inventors

Plainwell, MI, United States of America

Edgar N Petzold

Average Co-Inventor Count = 5.00

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 = 30

Edgar N Petzold ↔ Takashi Sohda (1 patent)Edgar N Petzold ↔ Hitoshi Ikeda (1 patent)Edgar N Petzold ↔ Jerry R Colca (1 patent)Edgar N Petzold ↔ John C Greenfield (1 patent)Edgar N PetzoldEdgar N Petzold (1 patent)Takashi SohdaTakashi Sohda (95 patents)Hitoshi IkedaHitoshi Ikeda (74 patents)Jerry R ColcaJerry R Colca (7 patents)John C GreenfieldJohn C Greenfield (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. The Upjohn Co. (1 from 2,170 patents)

2. Takeda Chemical Industries, Inc. (1 from 1,858 patents)


1 patent:

1. 5441971 - Thiazolidinedione derivatives, production and use thereof

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as of
1/3/2026
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