Growing community of inventors

Akashi, Japan

Hiroshi Yokoyama

Average Co-Inventor Count = 3.43

ph-index = 3

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

Hiroshi YokoyamaIkuo Okino (2 patents)Hiroshi YokoyamaMasaaki Yokoe (2 patents)Hiroshi YokoyamaKazumasa Yamane (2 patents)Hiroshi YokoyamaYuji Kubo (2 patents)Hiroshi YokoyamaYoshihiro Mizumoto (1 patent)Hiroshi YokoyamaYoshinori Kashita (1 patent)Hiroshi YokoyamaHiroshi Yokoyama (4 patents)Ikuo OkinoIkuo Okino (4 patents)Masaaki YokoeMasaaki Yokoe (4 patents)Kazumasa YamaneKazumasa Yamane (3 patents)Yuji KuboYuji Kubo (2 patents)Yoshihiro MizumotoYoshihiro Mizumoto (1 patent)Yoshinori KashitaYoshinori Kashita (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kaneka Corporation (2 from 1,702 patents)

2. Kanegafuchi Kagaku Kogyo Kabushiki Kaisha (2 from 698 patents)


4 patents:

1. 6465099 - Vinyl chloride fiber and process of producing the same

2. 6312804 - Vinyl chloride fibers and process for preparing the same

3. 5411800 - Doll's hair

4. 5083967 - Fiber for doll's hair

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as of
12/21/2025
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