Growing community of inventors

Hiroshima, Japan

Katsumi Sumioda

Average Co-Inventor Count = 4.00

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 = 13

Katsumi Sumioda ↔ Hideki Mizuguchi (1 patent)Katsumi Sumioda ↔ Minoru Yoshida (1 patent)Katsumi Sumioda ↔ Norimasa Oda (1 patent)Katsumi SumiodaKatsumi Sumioda (1 patent)Hideki MizuguchiHideki Mizuguchi (22 patents)Minoru YoshidaMinoru Yoshida (21 patents)Norimasa OdaNorimasa Oda (6 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. The Japan Steel Works, Ltd. (1 from 414 patents)


1 patent:

1. 5516205 - Twin extruder

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1/23/2026
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