Growing community of inventors

Osaka, Japan

Keiji Nakai

Average Co-Inventor Count = 6.00

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 = 1

Keiji NakaiTakahiro Hamada (1 patent)Keiji NakaiTokumi Ikeda (1 patent)Keiji NakaiTakashi Nishimura (1 patent)Keiji NakaiTakuo Nakade (1 patent)Keiji NakaiTsutomu Morikawa (1 patent)Keiji NakaiKeiji Nakai (1 patent)Takahiro HamadaTakahiro Hamada (22 patents)Tokumi IkedaTokumi Ikeda (5 patents)Takashi NishimuraTakashi Nishimura (1 patent)Takuo NakadeTakuo Nakade (1 patent)Tsutomu MorikawaTsutomu Morikawa (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Osaka Prefectural Government (1 from 12 patents)

2. Nomura Plating Co., Ltd. (1 from 6 patents)


1 patent:

1. 7896061 - Product having improved zinc erosion resistance

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as of
12/11/2025
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