Growing community of inventors

Tsukuba, Japan

Hiroshi Ohkuma

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 = 3

Hiroshi OhkumaEiji Takahashi (1 patent)Hiroshi OhkumaNorimasa Yokoyama (1 patent)Hiroshi OhkumaShuichi Hayashi (1 patent)Hiroshi OhkumaKouki Kase (1 patent)Hiroshi OhkumaDaizou Kanda (1 patent)Hiroshi OhkumaHiroshi Ohkuma (1 patent)Eiji TakahashiEiji Takahashi (69 patents)Norimasa YokoyamaNorimasa Yokoyama (54 patents)Shuichi HayashiShuichi Hayashi (54 patents)Kouki KaseKouki Kase (16 patents)Daizou KandaDaizou Kanda (11 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hodogaya Chemical Co., Ltd. (1 from 328 patents)


1 patent:

1. 8748014 - Compound having a substituted anthracene ring structure and pyridoindole ring structure, and organic electroluminescent device

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1/8/2026
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