Growing community of inventors

Hikone, Japan

Kazumi Ookawa

Average Co-Inventor Count = 4.86

ph-index = 3

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 = 175

Kazumi OokawaHaruo Sugai (2 patents)Kazumi OokawaSatoru Makita (2 patents)Kazumi OokawaHikoyoshi Hara (1 patent)Kazumi OokawaMasatoshi Dairin (1 patent)Kazumi OokawaAkihiro Michimori (1 patent)Kazumi OokawaHiroyuki Inbe (1 patent)Kazumi OokawaKusuo Iwanaga (1 patent)Kazumi OokawaKatsuji Nakamura (1 patent)Kazumi OokawaYoshinori Matsue (1 patent)Kazumi OokawaHiroyuki Noda (1 patent)Kazumi OokawaKazumi Ookawa (3 patents)Haruo SugaiHaruo Sugai (10 patents)Satoru MakitaSatoru Makita (2 patents)Hikoyoshi HaraHikoyoshi Hara (7 patents)Masatoshi DairinMasatoshi Dairin (6 patents)Akihiro MichimoriAkihiro Michimori (5 patents)Hiroyuki InbeHiroyuki Inbe (3 patents)Kusuo IwanagaKusuo Iwanaga (2 patents)Katsuji NakamuraKatsuji Nakamura (2 patents)Yoshinori MatsueYoshinori Matsue (1 patent)Hiroyuki NodaHiroyuki Noda (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Matsushita Electric Works, Ltd. (3 from 1,623 patents)


3 patents:

1. 6030347 - Biological-signal detecting device

2. 5993401 - Relax inducing device with heartbeat detection unit

3. 5792080 - Massaging apparatus having self-adjusting constant strength and

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as of
12/14/2025
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