Masahiro Oka

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for manufacturing magnetic recording media
- Patent number 8,221,637
- Issue date Jul 17, 2012
- Kabushiki Kaisha Toshiba
- Yoshiyuki Kamata
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetic recording medium having a secondary recording layer made o...
- Patent number 8,116,035
- Issue date Feb 14, 2012
- Tohoku University
- Migaku Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording media, production process thereof,...
- Patent number 7,943,248
- Issue date May 17, 2011
- Tohoku University
- Migaku Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium, and perpendicular magnetic...
- Patent number 7,879,466
- Issue date Feb 1, 2011
- Tohoku University
- Migaku Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and magnetic recording/reproducing apparatus
- Patent number 7,862,915
- Issue date Jan 4, 2011
- TOHOKU UNIVERSITY
- Tomoyuki Maeda
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for manufacturing magnetic recording media
- Patent number 7,771,602
- Issue date Aug 10, 2010
- Kabushiki Kaisha Toshiba
- Yoshiyuki Kamata
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Production process of perpendicular magnetic recording medium
- Patent number 7,744,966
- Issue date Jun 29, 2010
- Showa Denko K.K.
- Masahiro Oka
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording medium and perpendicular magnetic...
- Patent number 7,687,158
- Issue date Mar 30, 2010
- Showa Denko K.K.
- Migaku Takahashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Substrate for magnetic recording media, magnetic recording media an...
- Patent number 7,635,529
- Issue date Dec 22, 2009
- Showa Denko K.K.
- Katsuyuki Naito
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording media, substrate for magnetic recording media, a...
- Patent number 7,580,223
- Issue date Aug 25, 2009
- Kabushiki Kaisha Toshiba
- Masatoshi Sakurai
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for manufacturing substrate for discrete track recording med...
- Patent number 7,314,833
- Issue date Jan 1, 2008
- Kabushiki Kaisha Toshiba
- Yoshiyuki Kamata
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and magnetic recording device
- Patent number 6,607,848
- Issue date Aug 19, 2003
- Showa Denko K.K.
- Masahiro Oka
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 5,736,262
- Issue date Apr 7, 1998
- Mitsubishi Chemical Corporation
- Shin Ohkijima
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and method for its production
- Patent number 5,494,722
- Issue date Feb 27, 1996
- Mitsubishi Chemical Corporation
- Masahiro Oka
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR MANUFACTURING MAGNETIC RECORDING MEDIA
- Publication number 20100264019
- Publication date Oct 21, 2010
- Kabushiki Kaisha Toshiba
- Yoshiyuki Kamata
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
MAGNETIC RECORDING MEDIUM, MANUFACTURING METHOD THEREFOR, AND MAGNE...
- Publication number 20100014192
- Publication date Jan 21, 2010
- SHOWA DENKO K.K.
- Masahiro OKA
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING AP...
- Publication number 20090231755
- Publication date Sep 17, 2009
- Migaku Takahashi
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording medium, production process thereof...
- Publication number 20090226763
- Publication date Sep 10, 2009
- Showa Denko K.K.
- Masahiro Oka
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular Magnetic Recording Medium, and Perpendicular Magnetic...
- Publication number 20090034119
- Publication date Feb 5, 2009
- TOHOKU UNIVERSITY
- Migaku Takahashi
- G11 - INFORMATION STORAGE
Information Patent Application
Method of Producing a Magnetic Recording Medium
- Publication number 20090002878
- Publication date Jan 1, 2009
- SHOWA DENKO K.K.
- Masahiro Oka
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Production Process of Magnetic Recording Medium, Magnetic Recording...
- Publication number 20080199733
- Publication date Aug 21, 2008
- SHOWA DENKO K.K.
- Masahiro Oka
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular Magnetic Recording Media, Production Process Thereof,...
- Publication number 20080118781
- Publication date May 22, 2008
- TOHOKU UNIVERSITY
- Migaku Takahashi
- G11 - INFORMATION STORAGE
Information Patent Application
Method for Manufacturing Perpendicular Magnetic Recording Medium, P...
- Publication number 20080037407
- Publication date Feb 14, 2008
- Kabushiki Kaisha Toshiba
- Migaku Takahashi
- G11 - INFORMATION STORAGE
Information Patent Application
Method of Manufacturing Perpendicular Magnetic Recording Medium and...
- Publication number 20070291410
- Publication date Dec 20, 2007
- Showa Denko K.K.
- Masahiro Oka
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Perpendicular Magnetic Recording Medium and Perpendicular Magnetic...
- Publication number 20070259214
- Publication date Nov 8, 2007
- MIGAKU TAKAHASHI
- Migaku Takahashi
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium and magnetic recording/reproducing apparatus
- Publication number 20070141401
- Publication date Jun 21, 2007
- Kabushiki Kaisha Toshiba
- Tomoyuki Maeda
- G11 - INFORMATION STORAGE
Information Patent Application
Patterned substrate having patterns of protrusions and recesses, me...
- Publication number 20070026265
- Publication date Feb 1, 2007
- Kabushiki Kaisha Toshiba
- Masatoshi Sakurai
- G11 - INFORMATION STORAGE
Information Patent Application
Substrate for magnetic recording media, magnetic recording media an...
- Publication number 20070003798
- Publication date Jan 4, 2007
- Kabushiki Kaisha Toshiba
- Katsuyuki Naito
- G11 - INFORMATION STORAGE
Information Patent Application
Method and apparatus for manufacturing magnetic recording media
- Publication number 20070000861
- Publication date Jan 4, 2007
- Kabushiki Kaisha Toshiba
- Yoshiyuki Kamata
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Magnetic recording apparatus
- Publication number 20070002481
- Publication date Jan 4, 2007
- Kabushiki Kaisha Toshiba
- Akira Kikitsu
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording media, substrate for magnetic recording media, a...
- Publication number 20070003793
- Publication date Jan 4, 2007
- Kabushiki Kaisha Toshiba
- Masatoshi Sakurai
- G11 - INFORMATION STORAGE
Information Patent Application
Method for manufacturing substrate for discrete track recording med...
- Publication number 20070001331
- Publication date Jan 4, 2007
- Kabushiki Kaisha Toshiba
- Yoshiyuki Kamata
- B08 - CLEANING

Masahiro Oka

Person

Patents Grantslast 30 patents

Method and apparatus for manufacturing magnetic recording media

Magnetic recording medium having a secondary recording layer made o...

Perpendicular magnetic recording media, production process thereof,...

Perpendicular magnetic recording medium, and perpendicular magnetic...

Magnetic recording medium and magnetic recording/reproducing apparatus

Method and apparatus for manufacturing magnetic recording media

Production process of perpendicular magnetic recording medium

Perpendicular magnetic recording medium and perpendicular magnetic...

Substrate for magnetic recording media, magnetic recording media an...

Magnetic recording media, substrate for magnetic recording media, a...

Method for manufacturing substrate for discrete track recording med...

Magnetic recording medium and magnetic recording device

Magnetic recording medium

Magnetic recording medium and method for its production

Patents Applicationslast 30 patents

METHOD AND APPARATUS FOR MANUFACTURING MAGNETIC RECORDING MEDIA

MAGNETIC RECORDING MEDIUM, MANUFACTURING METHOD THEREFOR, AND MAGNE...

MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING AP...

Perpendicular magnetic recording medium, production process thereof...

Perpendicular Magnetic Recording Medium, and Perpendicular Magnetic...

Method of Producing a Magnetic Recording Medium

Production Process of Magnetic Recording Medium, Magnetic Recording...

Perpendicular Magnetic Recording Media, Production Process Thereof,...

Method for Manufacturing Perpendicular Magnetic Recording Medium, P...

Method of Manufacturing Perpendicular Magnetic Recording Medium and...

Perpendicular Magnetic Recording Medium and Perpendicular Magnetic...

Magnetic recording medium and magnetic recording/reproducing apparatus

Patterned substrate having patterns of protrusions and recesses, me...

Substrate for magnetic recording media, magnetic recording media an...

Method and apparatus for manufacturing magnetic recording media

Magnetic recording apparatus

Magnetic recording media, substrate for magnetic recording media, a...

Method for manufacturing substrate for discrete track recording med...