Growing community of inventors

Kokubunji, Japan

Mari Ogawa

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 = 3

Mari Ogawa ↔ Shinji Nishimura (1 patent)Mari Ogawa ↔ Koji Ishida (1 patent)Mari Ogawa ↔ Hirohisa Sano (1 patent)Mari Ogawa ↔ Hiroaki Inoue (1 patent)Mari Ogawa ↔ Toshio Kirihara (1 patent)Mari OgawaMari Ogawa (1 patent)Shinji NishimuraShinji Nishimura (101 patents)Koji IshidaKoji Ishida (28 patents)Hirohisa SanoHirohisa Sano (26 patents)Hiroaki InoueHiroaki Inoue (24 patents)Toshio KiriharaToshio Kirihara (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (1 from 42,534 patents)


1 patent:

1. 5422967 - Self-routing optical switch and optical switch array

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as of
1/20/2026
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