Growing community of inventors

Kitakyushu, Japan

Katsuhiko Umeno

Average Co-Inventor Count = 5.00

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 = 9

Katsuhiko Umeno ↔ Kazuhiko Hanashita (1 patent)Katsuhiko Umeno ↔ Toshihisa Yuda (1 patent)Katsuhiko Umeno ↔ Masahiro Matsuoka (1 patent)Katsuhiko Umeno ↔ Hiroyasu Suenaga (1 patent)Katsuhiko UmenoKatsuhiko Umeno (1 patent)Kazuhiko HanashitaKazuhiko Hanashita (4 patents)Toshihisa YudaToshihisa Yuda (2 patents)Masahiro MatsuokaMasahiro Matsuoka (2 patents)Hiroyasu SuenagaHiroyasu Suenaga (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mitsui Mining Co., Ltd. (1 from 44 patents)


1 patent:

1. 5840651 - Process for the production of activated coke for simultaneous

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12/13/2025
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