Growing community of inventors

Tokyo, Japan

Keiji Terasaka

Average Co-Inventor Count = 3.27

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 = 10

Keiji TerasakaTatsuya Higuchi (3 patents)Keiji TerasakaKazuyoshi Kitajima (3 patents)Keiji TerasakaKyoko Oshima (1 patent)Keiji TerasakaKeiji Terasaka (3 patents)Tatsuya HiguchiTatsuya Higuchi (12 patents)Kazuyoshi KitajimaKazuyoshi Kitajima (11 patents)Kyoko OshimaKyoko Oshima (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mitsubishi Heavy Industries Machinery Systems, Ltd. (3 from 121 patents)


3 patents:

1. 11302119 - Toll collection facility, onboard unit, toll collection system, toll collection method, and program

2. 11182983 - Same vehicle detection device, toll collection facility, same vehicle detection method, and program

3. 11080945 - On-board device, automatic toll collection machine, toll collection system, and toll collection method

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as of
1/4/2026
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