Growing community of inventors

Tokorozawa, Japan

Eiji Kojima

Average Co-Inventor Count = 6.00

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 = 4

Eiji KojimaMasahiko Miyashita (2 patents)Eiji KojimaTakao Yamada (2 patents)Eiji KojimaKazuo Kamei (2 patents)Eiji KojimaNobuo Ohyama (2 patents)Eiji KojimaToshio Ohtani (2 patents)Eiji KojimaEiji Kojima (2 patents)Masahiko MiyashitaMasahiko Miyashita (15 patents)Takao YamadaTakao Yamada (13 patents)Kazuo KameiKazuo Kamei (11 patents)Nobuo OhyamaNobuo Ohyama (6 patents)Toshio OhtaniToshio Ohtani (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Pioneer Corporation (2 from 2,647 patents)


2 patents:

1. 7231129 - Information reproduction apparatus and information reproduction method

2. 6742062 - Information reproduction apparatus and information reproduction method

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as of
12/17/2025
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