Growing community of inventors

Tokyo, Japan

Hachiro Hatakeda

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 = 2

Hachiro Hatakeda ↔ Hiroaki Kubo (1 patent)Hachiro Hatakeda ↔ Akira Mori (1 patent)Hachiro Hatakeda ↔ Mitsuhiro Shibasaki (1 patent)Hachiro Hatakeda ↔ Tsutao Takahashi (1 patent)Hachiro Hatakeda ↔ Tetsuo Nakamura (1 patent)Hachiro HatakedaHachiro Hatakeda (1 patent)Hiroaki KuboHiroaki Kubo (8 patents)Akira MoriAkira Mori (5 patents)Mitsuhiro ShibasakiMitsuhiro Shibasaki (2 patents)Tsutao TakahashiTsutao Takahashi (2 patents)Tetsuo NakamuraTetsuo Nakamura (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Chemical Grouting Company, Ltd. (1 from 14 patents)


1 patent:

1. 5797465 - Multi-shaft drilling unit

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as of
1/19/2026
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