Growing community of inventors

Kanagawa, Japan

Soji Ishiwata

Average Co-Inventor Count = 2.00

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 = 2

Soji IshiwataTsugutoshi Tanaka (1 patent)Soji IshiwataSoji Ishiwata (1 patent)Tsugutoshi TanakaTsugutoshi Tanaka (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nippon Aleph Corporation (1 from 10 patents)


1 patent:

1. 5184149 - Combination of magnetic card and printing apparatus therefor

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as of
1/21/2026
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