Growing community of inventors

Yokohama, Japan

Kazuyoski Kayama

Average Co-Inventor Count = 5.00

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 = 17

Kazuyoski Kayama ↔ Hiroyuki Watanabe (1 patent)Kazuyoski Kayama ↔ Shuichi Akita (1 patent)Kazuyoski Kayama ↔ Yasushi Kikuchi (1 patent)Kazuyoski Kayama ↔ Akinori Tokieda (1 patent)Kazuyoski KayamaKazuyoski Kayama (1 patent)Hiroyuki WatanabeHiroyuki Watanabe (28 patents)Shuichi AkitaShuichi Akita (20 patents)Yasushi KikuchiYasushi Kikuchi (17 patents)Akinori TokiedaAkinori Tokieda (10 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. The Yokohama Rubber Co., Ltd. (1 from 2,763 patents)

2. Nippon Zeon Company, Ltd. (1 from 598 patents)


1 patent:

1. 4677165 - Rubber composition for tire tread

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as of
12/20/2025
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