Growing community of inventors

Tokyo, Japan

Yohei Koyama

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 = 0

Yohei KoyamaKazuyuki Fukuda (1 patent)Yohei KoyamaHirokazu Morita (1 patent)Yohei KoyamaHisayuki Nakashima (5 patents)Yohei KoyamaTatsuya Yamashita (1 patent)Yohei KoyamaYohei Koyama (1 patent)Kazuyuki FukudaKazuyuki Fukuda (19 patents)Hirokazu MoritaHirokazu Morita (14 patents)Hisayuki NakashimaHisayuki Nakashima (5 patents)Tatsuya YamashitaTatsuya Yamashita (3 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Mitsui Chemicals, Inc. (1 from 1,786 patents)

2. Basf Coatings Gmbh (333 patents)


1 patent:

1. 12359063 - Polycarbodiimide composition, producing method of polycarbodiimide composition, aqueous dispersion composition, solution composition, resin composition, resin cured product, and carbodiimide cross-linking agent for fiber treatment

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as of
12/6/2025
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