Yasumasa Toba

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Photosensitive recording material, photosensitive recording medium,...
- Patent number 5,698,345
- Issue date Dec 16, 1997
- Toppan Printing Co., Ltd.
- Yasushi Ohe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photopolymerization initiator composition and photopolymerizable co...
- Patent number 5,631,307
- Issue date May 20, 1997
- Toyo Ink Manufacturing Co., Ltd.
- Yasuhiro Tanaka
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
(Oxo)sulfonium complex, polymerizable composition containing the co...
- Patent number 5,500,453
- Issue date Mar 19, 1996
- Toyo Ink Manufacturing Co., Ltd.
- Yasumasa Toba
- C07 - ORGANIC CHEMISTRY