Growing community of inventors

Higashikurume, Japan

Kiyotaka Koyama

Average Co-Inventor Count = 6.00

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 = 6

Kiyotaka Koyama ↔ Yoshikazu Yamamoto (1 patent)Kiyotaka Koyama ↔ Yasuhiro Kinoshita (1 patent)Kiyotaka Koyama ↔ Yasutaka Miura (1 patent)Kiyotaka Koyama ↔ Kunio Takahashi (1 patent)Kiyotaka Koyama ↔ Kaoru Takatori (1 patent)Kiyotaka KoyamaKiyotaka Koyama (1 patent)Yoshikazu YamamotoYoshikazu Yamamoto (8 patents)Yasuhiro KinoshitaYasuhiro Kinoshita (3 patents)Yasutaka MiuraYasutaka Miura (3 patents)Kunio TakahashiKunio Takahashi (2 patents)Kaoru TakatoriKaoru Takatori (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nippon Paint Compnay, Ltd. (1 from 827 patents)


1 patent:

1. 5399785 - Tyrosinase activity inhibitor

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12/17/2025
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