Seiichi Takaoka

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electret material and electrostatic-type acoustic transducer
- Patent number 8,971,553
- Issue date Mar 3, 2015
- Nitto Denko Corporation
- Seiichi Takaoka
- H01 - BASIC ELECTRIC ELEMENTS
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
Information Patent Grant
Cathode-ray tube and display unit using the cathode-ray tube
- Patent number 5,635,793
- Issue date Jun 3, 1997
- Nitto Denko Corporation
- Masatoshi Ochiai
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
ELECTRET MATERIAL AND ELECTROSTATIC-TYPE ACOUSTIC TRANSDUCER
- Publication number 20110249834
- Publication date Oct 13, 2011
- NITTO DENKO CORPORATION
- Seiichi Takaoka
- H01 - BASIC ELECTRIC ELEMENTS
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