Growing community of inventors

Sagamihara, Japan

Takashi Umeda

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

Takashi Umeda ↔ Hiroshi Ohyama (1 patent)Takashi Umeda ↔ Hiromichi Ishikawa (1 patent)Takashi Umeda ↔ Shinji Onoue (1 patent)Takashi Umeda ↔ Kazuo Kajikawa (1 patent)Takashi Umeda ↔ Toshihiro Shibata (1 patent)Takashi UmedaTakashi Umeda (1 patent)Hiroshi OhyamaHiroshi Ohyama (10 patents)Hiromichi IshikawaHiromichi Ishikawa (5 patents)Shinji OnoueShinji Onoue (3 patents)Kazuo KajikawaKazuo Kajikawa (1 patent)Toshihiro ShibataToshihiro Shibata (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hokko Chemical Industry Co., Ltd. (1 from 59 patents)


1 patent:

1. 5116838 - Guanidine derivatives and fungicides for agriculture and horticulture

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as of
1/8/2026
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