Growing community of inventors

Tokyo, Japan

Kikuo Sumiyoshi

Average Co-Inventor Count = 4.09

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 = 119

Kikuo SumiyoshiKenichi Abe (2 patents)Kikuo SumiyoshiKenzou Kaji (2 patents)Kikuo SumiyoshiMasumi Kaneuchi (2 patents)Kikuo SumiyoshiKenji Kurashina (2 patents)Kikuo SumiyoshiMasayuki Horikawa (1 patent)Kikuo SumiyoshiYataro Takata (1 patent)Kikuo SumiyoshiKikuo Sumiyoshi (3 patents)Kenichi AbeKenichi Abe (21 patents)Kenzou KajiKenzou Kaji (2 patents)Masumi KaneuchiMasumi Kaneuchi (2 patents)Kenji KurashinaKenji Kurashina (2 patents)Masayuki HorikawaMasayuki Horikawa (2 patents)Yataro TakataYataro Takata (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ohkura Electric Co., Ltd. (2 from 20 patents)

2. Ntt Data Communications Systems Corporation (2 from 15 patents)

3. Texas Instruments Japan Limited (2 from 14 patents)

4. Oiles Kogyo Kabushiki Kaisha (1 from 4 patents)


3 patents:

1. 5199071 - Modem mode matching method with PBX dial-in

2. 5153897 - Automatically controlling the operation mode of data circuit terminating

3. 4100245 - Method for manufacturing bearings or other anti-friction elements formed

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as of
12/5/2025
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