Growing community of inventors

Yokohama, Japan

Keiji Saijo

Average Co-Inventor Count = 7.00

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 = 12

Keiji Saijo ↔ Kiyoshi Ogawa (1 patent)Keiji Saijo ↔ Hidenori Umeno (1 patent)Keiji Saijo ↔ Akira Yamaoka (1 patent)Keiji Saijo ↔ Shunji Tanaka (1 patent)Keiji Saijo ↔ Katsumi Takeda (1 patent)Keiji Saijo ↔ Masatoshi Haraguchi (1 patent)Keiji SaijoKeiji Saijo (1 patent)Kiyoshi OgawaKiyoshi Ogawa (22 patents)Hidenori UmenoHidenori Umeno (17 patents)Akira YamaokaAkira Yamaoka (16 patents)Shunji TanakaShunji Tanaka (12 patents)Katsumi TakedaKatsumi Takeda (12 patents)Masatoshi HaraguchiMasatoshi Haraguchi (7 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (1 from 42,535 patents)


1 patent:

1. 5341484 - Virtual machine system having an extended storage

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as of
1/23/2026
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