Hidetoshi Nakayama

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for purification of 1,1,1,2-tetrafluoroethane
- Patent number 5,444,171
- Issue date Aug 22, 1995
- Showa Denko Kabushiki Kaisha
- Hiromoto Ohno
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing 1,1,1,2-tetrafluoroethane
- Patent number 5,276,223
- Issue date Jan 4, 1994
- Showa Denko Kabushiki Kaisha
- Hiromoto Ohno
- C07 - ORGANIC CHEMISTRY