Teiichiro Umezawa

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Mask blank and transfer mask
- Patent number 9,946,153
- Issue date Apr 17, 2018
- Hoya Corporation
- Teiichiro Umezawa
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Mask blank, transfer mask, and methods of manufacturing the same
- Patent number 9,470,971
- Issue date Oct 18, 2016
- Hoya Corporation
- Teiichiro Umezawa
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Perpendicular magnetic recording disk and manufacturing method thereof
- Patent number 8,603,650
- Issue date Dec 10, 2013
- WD Media (Singapore) Pte. Ltd.
- Yoshiaki Sonobe
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Perpendicular magnetic recording disk and manufacturing method thereof
- Patent number 8,003,237
- Issue date Aug 23, 2011
- WD Media, Inc.
- Yoshiaki Sonobe
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium having soft magnetic layer and perpendicu...
- Patent number 7,983,003
- Issue date Jul 19, 2011
- WD Media (Singapore) Pte. Ltd.
- Yoshiaki Sonobe
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium substrate and perpendicular magnetic reco...
- Patent number 7,955,723
- Issue date Jun 7, 2011
- WD Media (Singapore) Pte. Ltd.
- Teiichiro Umezawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium, and thermal stability measuring method a...
- Patent number 7,420,886
- Issue date Sep 2, 2008
- Hoya Corporation
- Hiroshi Tomiyasu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium, and thermal stability measuring method a...
- Patent number 7,220,500
- Issue date May 22, 2007
- Hoya Corporation
- Hiroshi Tomiyasu
- G11 - INFORMATION STORAGE
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
Magnetic recording medium
- Patent number 7,169,487
- Issue date Jan 30, 2007
- Hoya Corporation
- Hisao Kawai
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 7,081,308
- Issue date Jul 25, 2006
- Hoya Corporation
- Hisao Kawai
- 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
Information Patent Grant
Magnetic disk using a glass substrate
- Patent number 6,916,558
- Issue date Jul 12, 2005
- Hoya Corporation
- Teiichiro Umezawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Antiferromagnetically coupled magnetic recording medium with dual-l...
- Patent number 6,759,138
- Issue date Jul 6, 2004
- Hoya Corporation
- Hiroshi Tomiyasu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and manufacturing method therefor
- Patent number 6,670,055
- Issue date Dec 30, 2003
- Hoya Corporation
- Hiroshi Tomiyasu
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
SUBSTRATE WITH MULTILAYER REFLECTIVE FILM REFLECTIVE MASK BLANK, RE...
- Publication number 20240377719
- Publication date Nov 14, 2024
- HOYA CORPORATION
- Teiichiro UMEZAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
SUBSTRATE WITH MULTILAYER REFLECTIVE FILM, REFLECTIVE MASK BLANK, R...
- Publication number 20240231214
- Publication date Jul 11, 2024
- HOYA CORPORATION
- Teiichiro UMEZAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
SUBSTRATE WITH MULTILAYER REFLECTIVE FILM, REFLECTIVE MASK BLANK, R...
- Publication number 20240134265
- Publication date Apr 25, 2024
- HOYA CORPORATION
- Teiichiro UMEZAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
MASK BLANK AND TRANSFER MASK
- Publication number 20170003583
- Publication date Jan 5, 2017
- HOYA CORPORATION
- Teiichiro Umezawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
MASK BLANK, TRANSFER MASK, AND METHODS OF MANUFACTURING THE SAME
- Publication number 20150104735
- Publication date Apr 16, 2015
- HOYA CORPORATION
- Teiichiro Umezawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Magnetic Recording Medium Substrate and Perpendicular Magnetic Reco...
- Publication number 20100203358
- Publication date Aug 12, 2010
- HOYA CORPORATION
- Teiichiro Umezawa
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING DISK AND MANUFACTURING METHOD THEREOF
- Publication number 20090081483
- Publication date Mar 26, 2009
- HOYA CORPORATION
- Yoshiaki Sonobe
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium, and thermal stability measuring method a...
- Publication number 20070248844
- Publication date Oct 25, 2007
- Hoya Corporation
- Hiroshi Tomiyasu
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording disk and manufacturing method thereof
- Publication number 20070148499
- Publication date Jun 28, 2007
- Hoya Corporation
- Yoshiaki Sonobe
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording medium
- Publication number 20070053106
- Publication date Mar 8, 2007
- Hoya Corporation
- Yoshiaki Sonobe
- G11 - INFORMATION STORAGE
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 recording medium
- Publication number 20040219394
- Publication date Nov 4, 2004
- HOYA CORPORATION, HOYA MAGNETICS SINGAPORE PTE. LTD.
- Hisao Kawai
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk and method of producing the same
- Publication number 20040213949
- Publication date Oct 28, 2004
- HOYA CORPORATION, HOYA MAGNETICS SINGAPORE PTE. LTD.
- Teiichiro Umezawa
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk using a glass substrate
- Publication number 20040161577
- Publication date Aug 19, 2004
- HOYA CORORATION
- Teiichiro Umezawa
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium
- Publication number 20030211363
- Publication date Nov 13, 2003
- Hoya Corporation
- Takashi Morikawa
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium and method of producing the same
- Publication number 20030203244
- Publication date Oct 30, 2003
- Hoya Corporation
- Hideki Isono
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium
- Publication number 20030152810
- Publication date Aug 14, 2003
- HOYA CORPORATION, HOYA MAGNETICS SINGAPORE PTE. LTD.
- Hisao Kawai
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium
- Publication number 20030108774
- Publication date Jun 12, 2003
- Hoya Corporation
- Hisao Kawai
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium
- Publication number 20030104248
- Publication date Jun 5, 2003
- HOYA CORPORATION AND HOYA MAGNETICS SINGAPORE PTE. LTD.
- Hiroshi Tomiyasu
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium
- Publication number 20030096140
- Publication date May 22, 2003
- Hoya Corporation
- Hiroshi Tomiyasu
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium and manufacturing method therefor
- Publication number 20020119350
- Publication date Aug 29, 2002
- Hoya Corporation
- Hiroshi Tomiyasu
- G11 - INFORMATION STORAGE

Teiichiro Umezawa

Person

Patents Grantslast 30 patents

Mask blank and transfer mask

Mask blank, transfer mask, and methods of manufacturing the same

Perpendicular magnetic recording disk and manufacturing method thereof

Perpendicular magnetic recording disk and manufacturing method thereof

Magnetic recording medium having soft magnetic layer and perpendicu...

Magnetic recording medium substrate and perpendicular magnetic reco...

Magnetic recording medium, and thermal stability measuring method a...

Magnetic recording medium, and thermal stability measuring method a...

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

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium

Magnetic disk using a glass substrate

Antiferromagnetically coupled magnetic recording medium with dual-l...

Magnetic recording medium and manufacturing method therefor

Patents Applicationslast 30 patents

SUBSTRATE WITH MULTILAYER REFLECTIVE FILM REFLECTIVE MASK BLANK, RE...

SUBSTRATE WITH MULTILAYER REFLECTIVE FILM, REFLECTIVE MASK BLANK, R...

SUBSTRATE WITH MULTILAYER REFLECTIVE FILM, REFLECTIVE MASK BLANK, R...

MASK BLANK AND TRANSFER MASK

MASK BLANK, TRANSFER MASK, AND METHODS OF MANUFACTURING THE SAME

Magnetic Recording Medium Substrate and Perpendicular Magnetic Reco...

PERPENDICULAR MAGNETIC RECORDING DISK AND MANUFACTURING METHOD THEREOF

Magnetic recording medium, and thermal stability measuring method a...

Perpendicular magnetic recording disk and manufacturing method thereof

Perpendicular magnetic recording medium

Magnetic recording medium

Magnetic recording medium

Magnetic disk and method of producing the same

Magnetic disk using a glass substrate

Magnetic recording medium

Magnetic recording medium and method of producing the same

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium

Magnetic recording medium and manufacturing method therefor