Growing community of inventors

Tokyo, Japan

Takashi Tsubahara

Average Co-Inventor Count = 6.00

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 = 13

Takashi Tsubahara ↔ Yasunori Matsuoka (1 patent)Takashi Tsubahara ↔ Takafumi Naito (1 patent)Takashi Tsubahara ↔ Shizuko Kushida (1 patent)Takashi Tsubahara ↔ Seiji Kaneko (1 patent)Takashi Tsubahara ↔ Takefumi Shindo (1 patent)Takashi TsubaharaTakashi Tsubahara (1 patent)Yasunori MatsuokaYasunori Matsuoka (3 patents)Takafumi NaitoTakafumi Naito (2 patents)Shizuko KushidaShizuko Kushida (2 patents)Seiji KanekoSeiji Kaneko (2 patents)Takefumi ShindoTakefumi Shindo (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Taisei Corporation (1 from 80 patents)

2. Ozawa Concrete Industry Co., Ltd. (1 from 5 patents)


1 patent:

1. 4774045 - Concrete structural member and method for manufacture thereof

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as of
12/15/2025
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