Growing community of inventors

Hiroshima, Japan

Ikuo Nishikawa

Average Co-Inventor Count = 2.62

ph-index = 6

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 = 117

Ikuo NishikawaChikashi Kawamoto (4 patents)Ikuo NishikawaNoboru Shouno (3 patents)Ikuo NishikawaKenichi Ogawa (3 patents)Ikuo NishikawaTakahiro Tochioka (1 patent)Ikuo NishikawaShigeharu Yokoyama (1 patent)Ikuo NishikawaNoboru Shono (1 patent)Ikuo NishikawaNorifumi Inoue (1 patent)Ikuo NishikawaShinji Gasami (1 patent)Ikuo NishikawaTeruhiko Morinaga (1 patent)Ikuo NishikawaFumihiro Kora (1 patent)Ikuo NishikawaHaruki Ota (1 patent)Ikuo NishikawaChikara Kawamoto (0 patent)Ikuo NishikawaNorifumi Inoue (0 patent)Ikuo NishikawaHaruki Ota (0 patent)Ikuo NishikawaSinji Daikyonishikawa Corporation Gasami (0 patent)Ikuo NishikawaFumihiro Kora (0 patent)Ikuo NishikawaIkuo Nishikawa (7 patents)Chikashi KawamotoChikashi Kawamoto (4 patents)Noboru ShounoNoboru Shouno (7 patents)Kenichi OgawaKenichi Ogawa (3 patents)Takahiro TochiokaTakahiro Tochioka (22 patents)Shigeharu YokoyamaShigeharu Yokoyama (4 patents)Noboru ShonoNoboru Shono (3 patents)Norifumi InoueNorifumi Inoue (2 patents)Shinji GasamiShinji Gasami (1 patent)Teruhiko MorinagaTeruhiko Morinaga (1 patent)Fumihiro KoraFumihiro Kora (1 patent)Haruki OtaHaruki Ota (1 patent)Chikara KawamotoChikara Kawamoto (0 patent)Norifumi InoueNorifumi Inoue (0 patent)Haruki OtaHaruki Ota (0 patent)Sinji Daikyonishikawa Corporation GasamiSinji Daikyonishikawa Corporation Gasami (0 patent)Fumihiro KoraFumihiro Kora (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mazda Motor Corporation (5 from 4,678 patents)

2. Hirotec Corporation (2 from 21 patents)

3. Toyo Kogyo Co., Ltd. (1 from 264 patents)

4. Gp Daikyo Corporation (1 from 17 patents)

5. Daikyonishikawa Corporation (40 patents)


7 patents:

1. 7390049 - Vehicle door

2. 7111894 - Automobile door structure

3. 6725606 - Vehicle door having anti-theft cover member

4. 6474721 - Vehicle door

5. 6449907 - Vehicle door and process of assembling the vehicle door

6. 4969295 - Door structure of vehicle

7. 4187642 - Weather-tight seal structures for automobile windows

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as of
12/10/2025
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