Ryuichi Yamamoto

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Ohmuta, 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 alicyclic isocyanates
- Patent number 4,299,766
- Issue date Nov 10, 1981
- Mitsui Toatsu Chemicals, Inc.
- Ryuichi Yamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of aminoaryl thiophosphates and aminoar...
- Patent number 4,279,838
- Issue date Jul 21, 1981
- Mitsui Toatsu Chemicals Inc.
- Ryuichi Yamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of phosphoric esters and thiophosphoric...
- Patent number 4,256,672
- Issue date Mar 17, 1981
- Mitsui Toatsu Chemicals, Inc.
- 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
Information Patent Grant
Process for purifying crude p-aminophenol
- Patent number 4,139,562
- Issue date Feb 13, 1979
- Mitsui Toatsu Chemicals, Inc.
- Ryuichi Yamamoto
- C07 - ORGANIC CHEMISTRY