Growing community of inventors

Portage, MI, United States of America

John C Greenfield

Average Co-Inventor Count = 4.29

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 = 31

John C GreenfieldHoward A Whaley (2 patents)John C GreenfieldJohn H Coats (2 patents)John C GreenfieldWilliam C Snyder (2 patents)John C GreenfieldTakashi Sohda (1 patent)John C GreenfieldHitoshi Ikeda (1 patent)John C GreenfieldJerry R Colca (1 patent)John C GreenfieldEdgar N Petzold (1 patent)John C GreenfieldJohn C Greenfield (3 patents)Howard A WhaleyHoward A Whaley (11 patents)John H CoatsJohn H Coats (9 patents)William C SnyderWilliam C Snyder (3 patents)Takashi SohdaTakashi Sohda (95 patents)Hitoshi IkedaHitoshi Ikeda (74 patents)Jerry R ColcaJerry R Colca (7 patents)Edgar N PetzoldEdgar N Petzold (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. The Upjohn Co. (3 from 2,170 patents)

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


3 patents:

1. 5441971 - Thiazolidinedione derivatives, production and use thereof

2. 4454228 - Biologically pure culture of Streptomyces microspinus NRRL 12524 capable

3. 4427776 - Composition of matter and process

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as of
12/30/2025
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