Growing community of inventors

Shiga, Japan

Tomio Koga

Average Co-Inventor Count = 3.00

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

Tomio Koga ↔ Koichi Ushimaru (1 patent)Tomio Koga ↔ Tomoaki Hamakawa (1 patent)Tomio KogaTomio Koga (1 patent)Koichi UshimaruKoichi Ushimaru (5 patents)Tomoaki HamakawaTomoaki Hamakawa (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

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


1 patent:

1. 4874774 - Nifedipine compositions and the production thereof

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as of
1/13/2026
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