Growing community of inventors

Tokyo, Japan

Noriso Tsugawa

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 = 11

Noriso TsugawaHideshi Okamoto (1 patent)Noriso TsugawaNoriso Tsugawa (1 patent)Hideshi OkamotoHideshi Okamoto (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. The Sailor Pen Co., Ltd. (1 from 18 patents)


1 patent:

1. 5277510 - Applicator with spring biased ball

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as of
12/19/2025
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