Growing community of inventors

Ibaraki, Japan

Shun-ichi Hayakawa

Average Co-Inventor Count = 5.00

ph-index = 2

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 = 5

Shun-ichi HayakawaYasuo Tezuka (2 patents)Shun-ichi HayakawaTakemi Tokieda (2 patents)Shun-ichi HayakawaUtazi Sawa (2 patents)Shun-ichi HayakawaNobuzi Nishimura (2 patents)Shun-ichi HayakawaShun-ichi Hayakawa (2 patents)Yasuo TezukaYasuo Tezuka (17 patents)Takemi TokiedaTakemi Tokieda (9 patents)Utazi SawaUtazi Sawa (3 patents)Nobuzi NishimuraNobuzi Nishimura (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sumitomo Chemical Company, Limited (2 from 6,893 patents)


2 patents:

1. 4482501 - Process for producing aminoaryl-.beta.-sulfatoethylsulfone

2. 4346046 - Process for producing aminoaryl-.beta.-sulfatoethylsulfone

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as of
12/16/2025
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