Masafumi Ishiyama

Person

Singapore, SG

People

Patents Grantslast 30 patents

Information Patent Grant
Perpendicular magnetic recording medium and method of manufacturing...
- Patent number 9,159,351
- Issue date Oct 13, 2015
- WD Media (Singapore) Pte. Ltd.
- Kazuaki Sakamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium and process for manufacture...
- Patent number 8,871,368
- Issue date Oct 28, 2014
- WD Media (Singapore) Pte. Ltd.
- Takahiro Onoue
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium and manufacturing method of...
- Patent number 8,795,857
- Issue date Aug 5, 2014
- WD Media (Singapore) Pte. Ltd.
- Kenji Ayama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk and manufacturing method thereof
- Patent number 8,709,532
- Issue date Apr 29, 2014
- WD Media (Singapore) Pte. Ltd.
- Masafumi Ishiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of manufacturing perpendicular magnetic recording medium and...
- Patent number 8,623,528
- Issue date Jan 7, 2014
- WD Media (Singapore) Pte. Ltd.
- Teiichiro Umezawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk and magnetic disk manufacturing method
- Patent number 8,425,975
- Issue date Apr 23, 2013
- WD Media (Singapore) Pte. Ltd.
- Masafumi Ishiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium and method of manufacturing...
- Patent number 8,309,239
- Issue date Nov 13, 2012
- WD Media (Singapore) Pte. Ltd.
- Teiichiro Umezawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 8,142,916
- Issue date Mar 27, 2012
- WD Media (Singapore) Pte, Ltd
- Teiichiro Umezawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk, method of manufacturing the magnetic disk and method...
- Patent number 8,092,931
- Issue date Jan 10, 2012
- WD Media (Singapore) Pte. Ltd.
- Masafumi Ishiyama
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Perpendicular magnetic recording medium
- Patent number 8,057,926
- Issue date Nov 15, 2011
- WD Media(Singapore) Pte. Ltd.
- Kenji Ayama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk and manufacturing method thereof
- Patent number 7,736,768
- Issue date Jun 15, 2010
- Hoya Corporation
- Masafumi Ishiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk and manufacturing method thereof
- Patent number 7,722,968
- Issue date May 25, 2010
- Hoya Magnetics Singapore Pte. Ltd.
- Masafumi Ishiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Solid body surface evaluation method, magnetic disk evaluation meth...
- Patent number 7,695,833
- Issue date Apr 13, 2010
- Hoya Corporation
- Masafumi Ishiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk and method of producing the same
- Patent number 7,597,973
- Issue date Oct 6, 2009
- Hoya Corporation
- Masafumi Ishiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk, method of manufacturing the magnetic disk and method...
- Patent number 7,537,846
- Issue date May 26, 2009
- Hoya Corporation
- Masafumi Ishiyama
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Magnetic recording medium with multi-portion carbon-based protectio...
- Patent number 7,208,236
- Issue date Apr 24, 2007
- Hoya Corporation
- Takashi Morikawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Solid body surface evaluation method, magnetic disk evaluation meth...
- Patent number 7,174,775
- Issue date Feb 13, 2007
- Hoya Corporation
- Masafumi Ishiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk and method of producing the same
- Patent number 7,166,319
- Issue date Jan 23, 2007
- Hoya Corporation
- Masafumi Ishiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk and method of manufacturing same
- Patent number 7,105,241
- Issue date Sep 12, 2006
- Hoya Corporation
- Koichi Shimokawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 6,946,191
- Issue date Sep 20, 2005
- Hoya Corporation
- Takashi Morikawa
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING...
- Publication number 20110244119
- Publication date Oct 6, 2011
- WD MEDIA (SINGAPORE) PTE. LTD.
- TEIICHIRO UMEZAWA
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIUM AND PROCESS FOR MANUFACTURE...
- Publication number 20110212346
- Publication date Sep 1, 2011
- WD MEDIA (SINGAPORE) PTE. LTD.
- Takahiro Onoue
- G11 - INFORMATION STORAGE
Information Patent Application
METHOD FOR MANUFACTURING PERPENDICULAR MAGNETIC RECORDING MEDIUM AN...
- Publication number 20110111262
- Publication date May 12, 2011
- WD MEDIA (SINGAPORE) PTE. LTD.
- Teiichiro Umezawa
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC DISK AND MAGNETIC DISK MANUFACTURING METHOD
- Publication number 20100323221
- Publication date Dec 23, 2010
- HOYA CORPORATION
- Masafumi Ishiyama
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING...
- Publication number 20100279151
- Publication date Nov 4, 2010
- HOYA CORPORATION
- Kazuaki Sakamoto
- G11 - INFORMATION STORAGE
Information Patent Application
SINGLE-SIDED PERPENDICULAR MAGNETIC RECORDING MEDIUM
- Publication number 20100215992
- Publication date Aug 26, 2010
- HOYA CORPORATION
- Junichi HORIKAWA
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIUM
- Publication number 20100209740
- Publication date Aug 19, 2010
- HOYA CORPORATION
- Kenji Ayama
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC DISK AND MANUFACTURING METHOD THEREOF
- Publication number 20100196619
- Publication date Aug 5, 2010
- HOYA CORPORATION
- Masafumi Ishiyama
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MANUFACTURING METHOD OF...
- Publication number 20100196740
- Publication date Aug 5, 2010
- HOYA CORPORATION
- Kenji Ayama
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC RECORDING MEDIUM
- Publication number 20100119878
- Publication date May 13, 2010
- HOYA CORPORATION
- Teiichiro Umezawa
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING...
- Publication number 20100112379
- Publication date May 6, 2010
- HOYA CORPORATION
- Teiichiro Umezawa
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC DISK MANUFACTURING METHOD AND MAGNETIC DISK
- Publication number 20090169922
- Publication date Jul 2, 2009
- HOYA CORPORATION
- Masafumi Ishiyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk, method of manufacturing the magnetic disk and method...
- Publication number 20080268294
- Publication date Oct 30, 2008
- Hoya Corporation
- Masafumi Ishiyama
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
SOLID BODY SURFACE EVALUATION METHOD, MAGNETIC DISK EVALUATION METH...
- Publication number 20070196698
- Publication date Aug 23, 2007
- Hoya Corporation
- Masafumi Ishiyama
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC DISK AND METHOD OF PRODUCING THE SAME
- Publication number 20070087228
- Publication date Apr 19, 2007
- Hoya Corporation
- Masafumi Ishiyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk and manufacturing method thereof
- Publication number 20060073362
- Publication date Apr 6, 2006
- Hoya Corporation
- Masafumi Ishiyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk and manufacturing method thereof
- Publication number 20060063040
- Publication date Mar 23, 2006
- Hoya Corporation
- Masafumi Ishiyama
- G11 - INFORMATION STORAGE
Information Patent Application
Solid body surface evaluation method, magnetic disk evaluation meth...
- Publication number 20050217353
- Publication date Oct 6, 2005
- Hoya Corporation
- Masafumi Ishiyama
- G01 - MEASURING TESTING
Information Patent Application
Magnetic recording medium
- Publication number 20050208341
- Publication date Sep 22, 2005
- HOYA CORPORATION, HOYA MAGNETICS SINGAPORE PTE. LTD.
- Takashi Morikawa
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk, method of manufacturing the magnetic disk and method...
- Publication number 20050181240
- Publication date Aug 18, 2005
- Hoya Corporation
- Masafumi Ishiyama
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Magnetic disk and method of producing the same
- Publication number 20040241380
- Publication date Dec 2, 2004
- Hoya Corporation
- Masafumi Ishiyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk and method of manufacturing same
- Publication number 20040213951
- Publication date Oct 28, 2004
- HOYA CORPORATION
- Koichi Shimokawa
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Method of producing a magnetic disk
- Publication number 20040157006
- Publication date Aug 12, 2004
- Hoya Corporation
- Takashi Sato
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Magnetic recording medium
- Publication number 20030211363
- Publication date Nov 13, 2003
- Hoya Corporation
- Takashi Morikawa
- G11 - INFORMATION STORAGE

Masafumi Ishiyama

Person

Patents Grantslast 30 patents

Perpendicular magnetic recording medium and method of manufacturing...

Perpendicular magnetic recording medium and process for manufacture...

Perpendicular magnetic recording medium and manufacturing method of...

Magnetic disk and manufacturing method thereof

Method of manufacturing perpendicular magnetic recording medium and...

Magnetic disk and magnetic disk manufacturing method

Perpendicular magnetic recording medium and method of manufacturing...

Magnetic recording medium

Magnetic disk, method of manufacturing the magnetic disk and method...

Perpendicular magnetic recording medium

Magnetic disk and manufacturing method thereof

Magnetic disk and manufacturing method thereof

Solid body surface evaluation method, magnetic disk evaluation meth...

Magnetic disk and method of producing the same

Magnetic disk, method of manufacturing the magnetic disk and method...

Magnetic recording medium with multi-portion carbon-based protectio...

Solid body surface evaluation method, magnetic disk evaluation meth...

Magnetic disk and method of producing the same

Magnetic disk and method of manufacturing same

Magnetic recording medium

Patents Applicationslast 30 patents

PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING...

PERPENDICULAR MAGNETIC RECORDING MEDIUM AND PROCESS FOR MANUFACTURE...

METHOD FOR MANUFACTURING PERPENDICULAR MAGNETIC RECORDING MEDIUM AN...

MAGNETIC DISK AND MAGNETIC DISK MANUFACTURING METHOD

PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING...

SINGLE-SIDED PERPENDICULAR MAGNETIC RECORDING MEDIUM

PERPENDICULAR MAGNETIC RECORDING MEDIUM

MAGNETIC DISK AND MANUFACTURING METHOD THEREOF

PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MANUFACTURING METHOD OF...

MAGNETIC RECORDING MEDIUM

PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING...

MAGNETIC DISK MANUFACTURING METHOD AND MAGNETIC DISK

Magnetic disk, method of manufacturing the magnetic disk and method...

SOLID BODY SURFACE EVALUATION METHOD, MAGNETIC DISK EVALUATION METH...

MAGNETIC DISK AND METHOD OF PRODUCING THE SAME

Magnetic disk and manufacturing method thereof

Magnetic disk and manufacturing method thereof

Solid body surface evaluation method, magnetic disk evaluation meth...

Magnetic recording medium

Magnetic disk, method of manufacturing the magnetic disk and method...

Magnetic disk and method of producing the same

Magnetic disk and method of manufacturing same

Method of producing a magnetic disk

Magnetic recording medium