Growing community of inventors

Machida, Japan

Toru Koyama

Average Co-Inventor Count = 5.46

ph-index = 2

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 = 19

Toru Koyama ↔ Kazunori Oshima (2 patents)Toru Koyama ↔ Masakatsu Hatano (2 patents)Toru Koyama ↔ Masayuki Otake (1 patent)Toru Koyama ↔ Yoichi Kageyama (1 patent)Toru Koyama ↔ Masayoshi Murayama (1 patent)Toru Koyama ↔ Takao Kaneko (1 patent)Toru Koyama ↔ Masayosi Murayama (1 patent)Toru KoyamaToru Koyama (2 patents)Kazunori OshimaKazunori Oshima (34 patents)Masakatsu HatanoMasakatsu Hatano (9 patents)Masayuki OtakeMasayuki Otake (15 patents)Yoichi KageyamaYoichi Kageyama (13 patents)Masayoshi MurayamaMasayoshi Murayama (8 patents)Takao KanekoTakao Kaneko (2 patents)Masayosi MurayamaMasayosi Murayama (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mitsubishi Chemical Industries Limited (2 from 614 patents)


2 patents:

1. 4414133 - Catalytic composition

2. 4341659 - Catalytic composition

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as of
12/12/2025
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