Growing community of inventors

Tokyo, Japan

Katuhiro Tokutake

Average Co-Inventor Count = 2.77

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 = 43

Katuhiro TokutakeShinroku Nakao (2 patents)Katuhiro TokutakeTakashi Chino (2 patents)Katuhiro TokutakeSusumu Matsumoto (1 patent)Katuhiro TokutakeYuzo Abe (1 patent)Katuhiro TokutakeKatuhiro Tokutake (3 patents)Shinroku NakaoShinroku Nakao (135 patents)Takashi ChinoTakashi Chino (10 patents)Susumu MatsumotoSusumu Matsumoto (29 patents)Yuzo AbeYuzo Abe (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Combi Co., Ltd. (2 from 169 patents)

2. Combi Corporation (1 from 192 patents)


3 patents:

1. 5520433 - Mechanism for adjusting baby chair height

2. D275322 - Massage treatment table

3. 4458675 - Roller type finger-pressure apparatus

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as of
12/12/2025
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