Growing community of inventors

Tokyo, Japan

Ryoichi Isoyama

Average Co-Inventor Count = 4.80

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 = 15

Ryoichi Isoyama ↔ Teruo Matsui (2 patents)Ryoichi Isoyama ↔ Yasuyoshi Tsuchida (2 patents)Ryoichi Isoyama ↔ Kazumasa Onishi (2 patents)Ryoichi Isoyama ↔ Kei Ito (1 patent)Ryoichi Isoyama ↔ Hiroo Ueno (1 patent)Ryoichi IsoyamaRyoichi Isoyama (2 patents)Teruo MatsuiTeruo Matsui (2 patents)Yasuyoshi TsuchidaYasuyoshi Tsuchida (2 patents)Kazumasa OnishiKazumasa Onishi (2 patents)Kei ItoKei Ito (1 patent)Hiroo UenoHiroo Ueno (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Fujita Corporation (2 from 14 patents)

2. Abc Trading Co., Ltd. (2 from 5 patents)


2 patents:

1. 5244708 - Electromagnetic wave shielding interior material

2. 5098009 - Method for joining joint portions of electromagnetic wave shielding

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as of
12/18/2025
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