Growing community of inventors

Nara, Japan

Keiko Hirano

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 = 28

Keiko Hirano ↔ Yoichi Kawashima (1 patent)Keiko Hirano ↔ Kiyoshi Matsuno (1 patent)Keiko Hirano ↔ Junzo Matsumoto (1 patent)Keiko Hirano ↔ Toshihiko Senda (1 patent)Keiko HiranoKeiko Hirano (1 patent)Yoichi KawashimaYoichi Kawashima (27 patents)Kiyoshi MatsunoKiyoshi Matsuno (2 patents)Junzo MatsumotoJunzo Matsumoto (2 patents)Toshihiko SendaToshihiko Senda (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Santen Pharmaceutical Co., Ltd. (1 from 281 patents)


1 patent:

1. 5736546 - 1,4-(diphenlyalkyl) piperazine derivatives

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as of
12/12/2025
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