Growing community of inventors

Yokohama, Japan

Tsutomu Koyama

Average Co-Inventor Count = 4.61

ph-index = 3

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 = 35

Tsutomu KoyamaKiyoshi Matsumoto (2 patents)Tsutomu KoyamaAkira Takada (2 patents)Tsutomu KoyamaGen Kojima (2 patents)Tsutomu KoyamaMasao Unoki (2 patents)Tsutomu KoyamaTakeshi Abe (1 patent)Tsutomu KoyamaTetsuro Tsukada (1 patent)Tsutomu KoyamaTsuneji Ishii (1 patent)Tsutomu KoyamaTsutomu Koyama (3 patents)Kiyoshi MatsumotoKiyoshi Matsumoto (32 patents)Akira TakadaAkira Takada (25 patents)Gen KojimaGen Kojima (16 patents)Masao UnokiMasao Unoki (13 patents)Takeshi AbeTakeshi Abe (54 patents)Tetsuro TsukadaTetsuro Tsukada (4 patents)Tsuneji IshiiTsuneji Ishii (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Asahi Glass Company, Limited (3 from 2,560 patents)


3 patents:

1. 6311523 - Process for forming a glass sheet

2. 6101845 - Process for forming a glass sheet

3. 4225379 - Method of laminating plastic film and shaped metal substrates

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as of
12/8/2025
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