Growing community of inventors

Sumida-ku, Japan

Miyuki Hayama

Average Co-Inventor Count = 4.00

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 = 2

Miyuki Hayama ↔ Masaaki Tsukase (1 patent)Miyuki Hayama ↔ Osamu Takiguchi (1 patent)Miyuki Hayama ↔ Yoshimasa Tate (1 patent)Miyuki HayamaMiyuki Hayama (1 patent)Masaaki TsukaseMasaaki Tsukase (25 patents)Osamu TakiguchiOsamu Takiguchi (15 patents)Yoshimasa TateYoshimasa Tate (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Fujifilm Corporation (1 from 16,136 patents)

2. Kao Corporation (1 from 3,604 patents)


1 patent:

1. 7824449 - Hair dye composition

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1/8/2026
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