Growing community of inventors

Oyamazaki, Japan

Koichi Ishiyama

Average Co-Inventor Count = 4.00

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 = 1

Koichi Ishiyama ↔ Tadaaki Ohgi (1 patent)Koichi Ishiyama ↔ Kazuko Hirabayashi (1 patent)Koichi Ishiyama ↔ Junichi Yano (1 patent)Koichi IshiyamaKoichi Ishiyama (1 patent)Tadaaki OhgiTadaaki Ohgi (30 patents)Kazuko HirabayashiKazuko Hirabayashi (4 patents)Junichi YanoJunichi Yano (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nippon Shinyaku Company, Ltd. (1 from 229 patents)


1 patent:

1. 5559102 - Adenosine and guanosine-3'-5'-cyclic methylphosphonate derivatives

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12/15/2025
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