Growing community of inventors

Kanagawa-ken, Japan

Koichi Orii

Average Co-Inventor Count = 5.00

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 = 21

Koichi Orii ↔ Tomoyuki Akiyama (1 patent)Koichi Orii ↔ Koji Tsukuma (1 patent)Koichi Orii ↔ Yoshikazu Kikuchi (1 patent)Koichi Orii ↔ Yukinobu Hara (1 patent)Koichi OriiKoichi Orii (1 patent)Tomoyuki AkiyamaTomoyuki Akiyama (52 patents)Koji TsukumaKoji Tsukuma (30 patents)Yoshikazu KikuchiYoshikazu Kikuchi (4 patents)Yukinobu HaraYukinobu Hara (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Tosoh Corporation (1 from 893 patents)

2. Nippon Silica Glass Co., Ltd. (1 from 7 patents)


1 patent:

1. 5665133 - Process for production of pure transparent quartz

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as of
12/12/2025
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