Katsutoshi Numano

Follow

Person

Osaka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Process for producing 4,4'-Diamino-1,1'-dianthraquinonyl pigments
- Patent number 5,416,263
- Issue date May 16, 1995
- Sumitomo Chemical Co., Ltd.
- Iwao Sakaguchi
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for purification of crude 4,4'-diamino-1,1'-dianthraquinony...
- Patent number 5,393,899
- Issue date Feb 28, 1995
- Sumimoto Chemical Company, Limited
- Hiroki Inoue
- C07 - ORGANIC CHEMISTRY