Growing community of inventors

Tokyo, Japan

Masanobu Umezawa

Average Co-Inventor Count = 5.00

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 = 7

Masanobu UmezawaHiroshi Ichikawa (2 patents)Masanobu UmezawaToshikatsu Ishikawa (2 patents)Masanobu UmezawaHaruo Teranishi (2 patents)Masanobu UmezawaYoshikazu Imai (2 patents)Masanobu UmezawaMasanobu Umezawa (2 patents)Hiroshi IchikawaHiroshi Ichikawa (40 patents)Toshikatsu IshikawaToshikatsu Ishikawa (15 patents)Haruo TeranishiHaruo Teranishi (10 patents)Yoshikazu ImaiYoshikazu Imai (8 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nippon Carbon Co., Ltd. (2 from 41 patents)


2 patents:

1. 4769195 - Manufacturing a silicon carbide fiber reinforced glass composite using

2. 4717589 - Method for manufacturing a silicon carbide fiber reinforced glass

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as of
12/17/2025
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