Growing community of inventors

Tokyo, Japan

Yasuji Otsuka

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 = 1

Yasuji OtsukaHidekazu Takahashi (1 patent)Yasuji OtsukaToshio Watanabe (1 patent)Yasuji OtsukaShunzo Shimai (1 patent)Yasuji OtsukaSousuke Naito (1 patent)Yasuji OtsukaYasuji Otsuka (1 patent)Hidekazu TakahashiHidekazu Takahashi (36 patents)Toshio WatanabeToshio Watanabe (28 patents)Shunzo ShimaiShunzo Shimai (12 patents)Sousuke NaitoSousuke Naito (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Toshiba Ceramics Co., Ltd. (1 from 189 patents)

2. Otsuka Iron Works, Ltd. (1 from 2 patents)

3. Kansai Zyari Kabushiki-Kaisha (1 from 2 patents)


1 patent:

1. 4824035 - Cage mill

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1/8/2026
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