Growing community of inventors

Hitachi, Japan

Koji Horikawa

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 = 0

Koji Horikawa ↔ Akira Miyao (1 patent)Koji Horikawa ↔ Nobuhiro Harada (1 patent)Koji Horikawa ↔ Masahiko Sakuraba (4 patents)Koji Horikawa ↔ Takuya Moriai (1 patent)Koji Horikawa ↔ Shinichi Kobayashi (2 patents)Koji Horikawa ↔ Hisashi Umetsu (1 patent)Koji HorikawaKoji Horikawa (1 patent)Akira MiyaoAkira Miyao (24 patents)Nobuhiro HaradaNobuhiro Harada (15 patents)Masahiko SakurabaMasahiko Sakuraba (4 patents)Takuya MoriaiTakuya Moriai (3 patents)Shinichi KobayashiShinichi Kobayashi (2 patents)Hisashi UmetsuHisashi Umetsu (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi Industrial Equipment Systems Co., Ltd. (1 from 496 patents)


1 patent:

1. 8764169 - Inkjet recording device and printing head

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1/9/2026
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