Growing community of inventors

Utsunomiya, Japan

Eizi Hayakawa

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 = 8

Eizi HayakawaYoshi Arai (1 patent)Eizi HayakawaYukichi Toyoshima (1 patent)Eizi HayakawaAkio Kojima (1 patent)Eizi HayakawaMasatoshi Sakuma (1 patent)Eizi HayakawaEizi Hayakawa (1 patent)Yoshi AraiYoshi Arai (11 patents)Yukichi ToyoshimaYukichi Toyoshima (1 patent)Akio KojimaAkio Kojima (1 patent)Masatoshi SakumaMasatoshi Sakuma (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Dainippon Ink and Chemicals, Incorporated (1 from 630 patents)

2. Kawamura Institute of Chemical Research (1 from 42 patents)


1 patent:

1. 4430379 - Master plate for dry lithographic printing

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1/8/2026
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