Growing community of inventors

Sakai, Japan

Kiyohiko Matsumoto

Average Co-Inventor Count = 3.00

ph-index = 4

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 = 24

Kiyohiko MatsumotoToshihiko Yasui (3 patents)Kiyohiko MatsumotoIsamu Tokuda (3 patents)Kiyohiko MatsumotoNobuyoshi Utsuno (2 patents)Kiyohiko MatsumotoNorio Hamayasu (2 patents)Kiyohiko MatsumotoTakafumi Harada (2 patents)Kiyohiko MatsumotoTakahiro Yamanaka (1 patent)Kiyohiko MatsumotoJun Saeki (1 patent)Kiyohiko MatsumotoKiyohiko Matsumoto (5 patents)Toshihiko YasuiToshihiko Yasui (21 patents)Isamu TokudaIsamu Tokuda (10 patents)Nobuyoshi UtsunoNobuyoshi Utsuno (8 patents)Norio HamayasuNorio Hamayasu (6 patents)Takafumi HaradaTakafumi Harada (3 patents)Takahiro YamanakaTakahiro Yamanaka (3 patents)Jun SaekiJun Saeki (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Shimano Inc. (5 from 3,300 patents)


5 patents:

1. 12185704 - Fishing rod

2. 6269585 - Inner rod for a hollow collapsible fishing rod

3. 5946845 - Inner rod for a hollow collapsible fishing rod

4. 5577338 - Hollow collapsible fishing rod with fishline guide

5. 5194207 - Fishing rod manufacturing method

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as of
12/18/2025
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