Growing community of inventors

Amagasaki, Japan

Koichi Hirooka

Average Co-Inventor Count = 3.43

ph-index = 2

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 = 43

Koichi Hirooka ↔ Kenichi Mori (1 patent)Koichi Hirooka ↔ Shiro Yamauchi (1 patent)Koichi Hirooka ↔ Eiichi Nagao (1 patent)Koichi Hirooka ↔ Setsuyuki Matsuda (1 patent)Koichi Hirooka ↔ Yoshikuni Arahata (1 patent)Koichi HirookaKoichi Hirooka (2 patents)Kenichi MoriKenichi Mori (151 patents)Shiro YamauchiShiro Yamauchi (18 patents)Eiichi NagaoEiichi Nagao (10 patents)Setsuyuki MatsudaSetsuyuki Matsuda (7 patents)Yoshikuni ArahataYoshikuni Arahata (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mitsubishi Denki Kabushiki Kaisha (2 from 21,351 patents)


2 patents:

1. 5096549 - Dehumidifier and method of using

2. 4565901 - Gas-insulated electric device

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as of
12/11/2025
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