Growing community of inventors

Shizuoka, Japan

Tomoki Kumayama

Average Co-Inventor Count = 6.00

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 = 1

Tomoki Kumayama ↔ Fujihiko Sugiyama (1 patent)Tomoki Kumayama ↔ Hiroyuki Kageyama (1 patent)Tomoki Kumayama ↔ Seiichi Gyotoku (1 patent)Tomoki Kumayama ↔ Masahiko Koizumi (1 patent)Tomoki Kumayama ↔ Toshitaka Naito (1 patent)Tomoki KumayamaTomoki Kumayama (1 patent)Fujihiko SugiyamaFujihiko Sugiyama (20 patents)Hiroyuki KageyamaHiroyuki Kageyama (6 patents)Seiichi GyotokuSeiichi Gyotoku (3 patents)Masahiko KoizumiMasahiko Koizumi (2 patents)Toshitaka NaitoToshitaka Naito (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Koito Manufacturing Company, Ltd. (1 from 2,302 patents)


1 patent:

1. 6425431 - Welding method using heating plate and welding apparatus using the same

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12/11/2025
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