Ryuichi Yoshiyama

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Field effect transistor
- Patent number 8,178,397
- Issue date May 15, 2012
- Mitsubishi Chemical Corporation
- Shinji Aramaki
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Magnetic recording medium, method of producing the same, and record...
- Patent number 6,217,970
- Issue date Apr 17, 2001
- Mitsubishi Chemical Corporation
- Yoji Arita
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of inspecting magnetic disc and apparatus therefor and proce...
- Patent number 6,078,385
- Issue date Jun 20, 2000
- Mitsubishi Chemical Corporation
- Ryuichi Yoshiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Texturing apparatus for magnetic recording medium and magnetic reco...
- Patent number 5,981,902
- Issue date Nov 9, 1999
- Mitsubishi Chemical Corporation
- Yoji Arita
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium, method of producing the same, and record...
- Patent number 5,928,759
- Issue date Jul 27, 1999
- Mitsubishi Chemical Corporation
- Yoji Arita
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
FIELD EFFECT TRANSISTOR
- Publication number 20090072224
- Publication date Mar 19, 2009
- MITSUBISHI CHEMICAL CORPORATION
- Shinji Aramaki
- H01 - BASIC ELECTRIC ELEMENTS