Hiroshi Muramatsu

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Shizuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Disk drive device for rotating a disk
- Patent number 8,674,570
- Issue date Mar 18, 2014
- Samsung Electro-Mechanics Japan Advanced Technology Co., Ltd.
- Hiroki Yamazaki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Disk drive device for rotating a disk
- Patent number 8,456,050
- Issue date Jun 4, 2013
- Samsung Electro-Mechanics Japan Advanced Technology Co., Ltd.
- Hiroki Yamazaki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Disk drive device for rotating a disk
- Patent number 8,278,791
- Issue date Oct 2, 2012
- Alphana Technology Co., Ltd.
- Hiroki Yamazaki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
DISK DRIVE DEVICE FOR ROTATING A DISK
- Publication number 20130234550
- Publication date Sep 12, 2013
- Samsung Electro-Mechanics Japan Advanced Technology Co., Ltd.
- Hiroki Yamazaki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DISK DRIVE DEVICE FOR ROTATING A DISK
- Publication number 20130069460
- Publication date Mar 21, 2013
- ALPHANA Technology Co., Ltd.
- Hiroki Yamazaki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DISK DRIVE DEVICE FOR ROTATING A DISK
- Publication number 20100231068
- Publication date Sep 16, 2010
- ALPHANA Technology Co., Ltd.
- Hiroki Yamazaki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER