Growing community of inventors

Naruto, Japan

Hirofumi Nakagawa

Average Co-Inventor Count = 4.36

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 = 4

Hirofumi NakagawaYoshinori Endo (2 patents)Hirofumi NakagawaNobuyoshi Takahashi (1 patent)Hirofumi NakagawaHiroshi Fujishima (1 patent)Hirofumi NakagawaIsao Tada (1 patent)Hirofumi NakagawaMinoru Motoki (1 patent)Hirofumi NakagawaDaisuke Yanase (1 patent)Hirofumi NakagawaMitsuyuki Murakami (1 patent)Hirofumi NakagawaTatsuya Akasaka (1 patent)Hirofumi NakagawaHirofumi Nakagawa (2 patents)Yoshinori EndoYoshinori Endo (5 patents)Nobuyoshi TakahashiNobuyoshi Takahashi (4 patents)Hiroshi FujishimaHiroshi Fujishima (3 patents)Isao TadaIsao Tada (3 patents)Minoru MotokiMinoru Motoki (2 patents)Daisuke YanaseDaisuke Yanase (1 patent)Mitsuyuki MurakamiMitsuyuki Murakami (1 patent)Tatsuya AkasakaTatsuya Akasaka (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Otsuka Kagaku Kabushiki Kaisha (2 from 138 patents)


2 patents:

1. 6180568 - 4-aryl-4-substituted pyrazolidine-3, 5-dione derivatives

2. 5759958 - Triazole derivative, herbicidal compositions containing the derivatives

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12/18/2025
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