Growing community of inventors

Hiroshima, Japan

Katsumi Sumida

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 = 0

Katsumi Sumida ↔ Yoshitaka Kimura (1 patent)Katsumi Sumida ↔ Kazutoshi Izumiya (1 patent)Katsumi Sumida ↔ Takahiro Nakamaru (1 patent)Katsumi Sumida ↔ Katsuyuki Kaneko (1 patent)Katsumi Sumida ↔ Hiroyuki Okuma (1 patent)Katsumi Sumida ↔ Nobuaki Tanaka (1 patent)Katsumi Sumida ↔ Masashi Tanimoto (1 patent)Katsumi Sumida ↔ Shizuo Ueshige (1 patent)Katsumi SumidaKatsumi Sumida (1 patent)Yoshitaka KimuraYoshitaka Kimura (11 patents)Kazutoshi IzumiyaKazutoshi Izumiya (1 patent)Takahiro NakamaruTakahiro Nakamaru (1 patent)Katsuyuki KanekoKatsuyuki Kaneko (1 patent)Hiroyuki OkumaHiroyuki Okuma (1 patent)Nobuaki TanakaNobuaki Tanaka (1 patent)Masashi TanimotoMasashi Tanimoto (1 patent)Shizuo UeshigeShizuo Ueshige (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. The Japan Steel Works, Ltd. (1 from 407 patents)


1 patent:

1. 11618199 - Twin-screw extruder, gear box and method for extrusion

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as of
12/17/2025
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