Keishi Koizumi

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Retroreflection sheeting and film for use in retroreflection sheeting
- Patent number 7,314,284
- Issue date Jan 1, 2008
- Kaneka Corporation
- Keishi Koizumi
- G02 - OPTICS
Information Patent Grant
Methacrylic acid ester resin composition and film made thereof
- Patent number 6,309,739
- Issue date Oct 30, 2001
- Kaneka Corporation
- Keishi Koizumi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
Retroreflection sheeting and film for use in retroreflection sheeting
- Publication number 20070159696
- Publication date Jul 12, 2007
- Kaneka Corporation
- Keishi Koizumi
- G02 - OPTICS