Kumie Yamana

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for production of electret material
- Patent number 8,747,961
- Issue date Jun 10, 2014
- Nitto Denko Corporation
- Seiichi Takaoka
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
PROCESS FOR PRODUCTION OF ELECTRET MATERIAL
- Publication number 20110229655
- Publication date Sep 22, 2011
- Nitto Denko Corporation
- Seiichi Takaoka
- H01 - BASIC ELECTRIC ELEMENTS