Growing community of inventors

Shiga-ken, Japan

Tsutomu Watanabe

Average Co-Inventor Count = 3.00

ph-index = 2

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 = 6

Tsutomu WatanabeMasao Umezawa (2 patents)Tsutomu WatanabeHideki Nakanishi (2 patents)Tsutomu WatanabeTsutomu Watanabe (2 patents)Masao UmezawaMasao Umezawa (13 patents)Hideki NakanishiHideki Nakanishi (7 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Du Pont Toray Company Limited (1 from 32 patents)

2. Du Pont Toray (1 from 3 patents)


2 patents:

1. 6096252 - Process of making polyurethane fiber

2. 5800920 - Durable polyurethane fiber and method for the manufacture thereof

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as of
12/19/2025
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