Growing community of inventors

Osaka, Japan

Shigeru Ohtsuka

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 = 7

Shigeru OhtsukaMasashi Fujiwara (1 patent)Shigeru OhtsukaTatsurou Tsuchiya (1 patent)Shigeru OhtsukaHiroyuki Ishikawa (1 patent)Shigeru OhtsukaShigeru Ohtsuka (1 patent)Masashi FujiwaraMasashi Fujiwara (3 patents)Tatsurou TsuchiyaTatsurou Tsuchiya (3 patents)Hiroyuki IshikawaHiroyuki Ishikawa (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sakata Inx Corporation (1 from 77 patents)


1 patent:

1. 5849067 - Ink compositions for ink-jet recording

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12/8/2025
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