Kenji Obata

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Toritsuka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Continuous preparation of organic isocyanates
- Patent number 4,422,976
- Issue date Dec 27, 1983
- Mitsui Toatsu Chemicals, Incorporated
- Ryuichi Yamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing organic isocyanates
- Patent number 4,193,932
- Issue date Mar 18, 1980
- Mitsui Toatsu Chemicals Inc.
- Ryuichi Yamamoto
- C07 - ORGANIC CHEMISTRY