Growing community of inventors

Matsudo, Japan

Keiji Hayashi

Average Co-Inventor Count = 3.00

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 = 0

Keiji HayashiHiroaki Masunaga (1 patent)Keiji HayashiHirohiko Arisawa (1 patent)Keiji HayashiKeiji Hayashi (1 patent)Hiroaki MasunagaHiroaki Masunaga (5 patents)Hirohiko ArisawaHirohiko Arisawa (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Daiichi Pharmaceutical Col, Ltd. (1 from 1 patent)


1 patent:

1. 6410557 - Dry skin remedies

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as of
12/19/2025
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