Growing community of inventors

Yokohama, Japan

Hisao Otsuga

Average Co-Inventor Count = 5.00

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

Hisao Otsuga ↔ Akio Morinaga (1 patent)Hisao Otsuga ↔ Katsuaki Zenbayashi (1 patent)Hisao Otsuga ↔ Shinji Shimokawa (1 patent)Hisao Otsuga ↔ Osamu Toyoshima (1 patent)Hisao OtsugaHisao Otsuga (1 patent)Akio MorinagaAkio Morinaga (13 patents)Katsuaki ZenbayashiKatsuaki Zenbayashi (3 patents)Shinji ShimokawaShinji Shimokawa (2 patents)Osamu ToyoshimaOsamu Toyoshima (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ashimori Kogyo Kabushiki Kaisha (1 from 23 patents)

2. Tokyo Gas Kabushiki Kaisha (1 from 9 patents)


1 patent:

1. 4882470 - Boring device for opening passages to branch portions of a lined main

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12/15/2025
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