Growing community of inventors

Ibaraki-ken, Japan

Jun Ooya

Average Co-Inventor Count = 4.00

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 = 3

Jun Ooya ↔ Akira Kojima (1 patent)Jun Ooya ↔ Tomomi Okamoto (1 patent)Jun Ooya ↔ Shiro Hayashi (1 patent)Jun OoyaJun Ooya (1 patent)Akira KojimaAkira Kojima (33 patents)Tomomi OkamotoTomomi Okamoto (32 patents)Shiro HayashiShiro Hayashi (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (1 from 42,496 patents)

2. Hitachi Maxell, Limited (1 from 1,112 patents)


1 patent:

1. D504689 - Disc cartridge

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as of
12/25/2025
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