Takayuki Tanonaka

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Patents Grantslast 30 patents

Information Patent Grant
Preparation process of 4,4-dihydroxybiphenyl
- Patent number RE33779
- Issue date Dec 24, 1991
- Kureha Kagaku Kogyo K.K.
- Yutaka Konai
- 568 - Organic compounds
Information Patent Grant
Process for producing 2,6-dihydroxynaphthalene and 2,6-diacetoxynap...
- Patent number 4,814,521
- Issue date Mar 21, 1989
- Kureha Kagaku Kogyo Kabushiki Kaisha
- Takayuki Tanonaka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation process of 4,4-dihydroxybiphenyl
- Patent number 4,804,788
- Issue date Feb 14, 1989
- Kureha Kagaku Kogyo K.K.
- Yutaka Konai
- C07 - ORGANIC CHEMISTRY