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Sakai, Japan

Yuzo Sonoyama

Average Co-Inventor Count = 4.00

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 = 13

Yuzo Sonoyama ↔ Yukio Hozumi (2 patents)Yuzo Sonoyama ↔ Akira Ohi (2 patents)Yuzo Sonoyama ↔ Yoshitaka Masuda (1 patent)Yuzo Sonoyama ↔ Hiroyuki Yoshizaki (1 patent)Yuzo Sonoyama ↔ Hiromitsu Takanohashi (1 patent)Yuzo SonoyamaYuzo Sonoyama (2 patents)Yukio HozumiYukio Hozumi (5 patents)Akira OhiAkira Ohi (4 patents)Yoshitaka MasudaYoshitaka Masuda (9 patents)Hiroyuki YoshizakiHiroyuki Yoshizaki (6 patents)Hiromitsu TakanohashiHiromitsu Takanohashi (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Daicel Corporation (2 from 638 patents)

2. Mitsubishi Gas Chemical Company, Inc. (1 from 2,245 patents)


2 patents:

1. 3981843 - Impact-resistant, flame-retardant resin composition

2. 3966677 - Self-extinguishing polystyrene resin composition

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as of
12/13/2025
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