Growing community of inventors

Kitakyushu, Japan

Yuuji Koyama

Average Co-Inventor Count = 9.00

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 = 2

Yuuji KoyamaMasaaki Kobayashi (2 patents)Yuuji KoyamaJunichi Hamada (2 patents)Yuuji KoyamaYoshiharu Inoue (2 patents)Yuuji KoyamaShinichi Teraoka (2 patents)Yuuji KoyamaKen Kimura (2 patents)Yuuji KoyamaNorihiro Kanno (2 patents)Yuuji KoyamaShigeyuki Gotoh (2 patents)Yuuji KoyamaJun Takahashi (2 patents)Yuuji KoyamaYuuji Koyama (2 patents)Masaaki KobayashiMasaaki Kobayashi (88 patents)Junichi HamadaJunichi Hamada (42 patents)Yoshiharu InoueYoshiharu Inoue (27 patents)Shinichi TeraokaShinichi Teraoka (22 patents)Ken KimuraKen Kimura (21 patents)Norihiro KannoNorihiro Kanno (8 patents)Shigeyuki GotohShigeyuki Gotoh (2 patents)Jun TakahashiJun Takahashi (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nippon Steel & Sumikin Stainless Steel Corporation (2 from 67 patents)


2 patents:

1. 10072323 - Hot rolled ferritic stainless steel sheet, method for producing same, and method for producing ferritic stainless steel sheet

2. 9399809 - Hot rolled ferritic stainless steel sheet, method for producing same, and method for producing ferritic stainless steel sheet

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1/10/2026
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