Noriyuki Kumasaka

Person

Oume, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method of producing glass substrate for perpendicular magnetic reco...
- Patent number 8,348,721
- Issue date Jan 8, 2013
- Nihon Micro Coating Co., Ltd.
- Yuji Horie
- B24 - GRINDING POLISHING
Information Patent Grant
Method for polishing tape-shaped substrate for oxide superconductor...
- Patent number 8,148,301
- Issue date Apr 3, 2012
- Nihon Micro Coating Co., Ltd.
- Sanaki Horimoto
- B24 - GRINDING POLISHING
Information Patent Grant
Method for polishing tape-shaped substrate for oxide superconductor...
- Patent number 8,143,194
- Issue date Mar 27, 2012
- Nihon Micro Coating Co., Ltd.
- Sanaki Horimoto
- B24 - GRINDING POLISHING
Information Patent Grant
Cleaning tape and method of producing same
- Patent number 8,049,990
- Issue date Nov 1, 2011
- Nihon Micro Coating Co., Ltd.
- Yuji Horie
- B24 - GRINDING POLISHING
Information Patent Grant
Method of producing polishing material comprising diamond clusters
- Patent number 7,857,876
- Issue date Dec 28, 2010
- Nihon Micro Coating Co., Ltd.
- Noriyuki Kumasaka
- B24 - GRINDING POLISHING
Information Patent Grant
Method of polishing tape-shaped substrate and substrate for oxide s...
- Patent number 7,811,972
- Issue date Oct 12, 2010
- Nihon Micro Coating Co., Ltd.
- Yuji Horie
- B24 - GRINDING POLISHING
Information Patent Grant
Polishing material comprising diamond clusters
- Patent number 7,585,341
- Issue date Sep 8, 2009
- Nihon Micro Coating Co., Ltd.
- Noriyuki Kumasaka
- B24 - GRINDING POLISHING
Information Patent Grant
Texturing slurry and texturing method by using same
- Patent number 7,374,473
- Issue date May 20, 2008
- Nihon Micro Coating Co., Ltd.
- Noriyuki Kumasaka
- B24 - GRINDING POLISHING
Information Patent Grant
Magnetic head with sealing glass composition
- Patent number 6,512,655
- Issue date Jan 28, 2003
- Hitachi, Ltd.
- Hiroki Yamamoto
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Glass composition, structure, and apparatus using the same
- Patent number 6,503,858
- Issue date Jan 7, 2003
- Hitachi, Ltd.
- Hiroki Yamamoto
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Disk drive with unbalance correcting mechanism
- Patent number 6,477,133
- Issue date Nov 5, 2002
- Hitachi, Ltd.
- Yasuhiro Yoshimura
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive unit with hydrodynamic fluid bearing unit and disk devic...
- Patent number 6,369,980
- Issue date Apr 9, 2002
- Hitachi, Ltd.
- Katsutoshi Nii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Disk drive unit with hydrodynamic fluid bearing unit and disk devic...
- Patent number 6,369,981
- Issue date Apr 9, 2002
- Hitachi, Ltd.
- Katsutoshi Nii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Video signal recording and reproducing apparatus compatible with an...
- Patent number 6,339,676
- Issue date Jan 15, 2002
- Hitachi, Ltd.
- Nobutaka Amada
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk apparatus and motor therefor
- Patent number 6,256,288
- Issue date Jul 3, 2001
- Hitachi, Ltd.
- Yoshiaki Yamauchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive unit with hydrodynamic fluid bearing unit and disk devic...
- Patent number 6,243,230
- Issue date Jun 5, 2001
- Hitachi, Ltd.
- Katsutoshi Nii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Glass composition, structure, and apparatus using the same
- Patent number 6,150,027
- Issue date Nov 21, 2000
- Hitachi, Ltd.
- Hiroki Yamamoto
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Video signal recording and reproducing apparatus compatible with an...
- Patent number 6,104,862
- Issue date Aug 15, 2000
- Hitachi, Ltd.
- Nobutaka Amada
- G11 - INFORMATION STORAGE
Information Patent Grant
Soft magnetic thin film, and magnetic head and magnetic recording d...
- Patent number 6,033,792
- Issue date Mar 7, 2000
- Hitachi, Ltd.
- Fumiyoshi Kirino
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head with protective film comprising amorphous CaMgSi.sub....
- Patent number 6,031,694
- Issue date Feb 29, 2000
- Hitachi, Ltd.
- Takuo Tamura
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Heat resistant, high saturation magnetic flux density film
- Patent number 5,879,798
- Issue date Mar 9, 1999
- Hitachi, Ltd.
- Toshio Kobayashi
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Soft magnetic thin film, and magnetic head and magnetic recording d...
- Patent number 5,873,955
- Issue date Feb 23, 1999
- Hitachi, Ltd.
- Fumiyoshi Kirino
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Soft magnetic thin film, and magnetic head and magnetic recording d...
- Patent number 5,858,548
- Issue date Jan 12, 1999
- Hitachi, Ltd.
- Fumiyoshi Kirino
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head and magnetic recording and reproducing apparatus usin...
- Patent number 5,463,518
- Issue date Oct 31, 1995
- Hitachi, Ltd.
- Shigekazu Otomo
- G11 - INFORMATION STORAGE
Information Patent Grant
Material for nonmagnetic oxide substrate and magnetic head
- Patent number 5,290,738
- Issue date Mar 1, 1994
- Hitachi Metals, Ltd.
- Hiroshi Tomishima
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Magnetic head having main and auxiliary magnetic paths
- Patent number 5,247,415
- Issue date Sep 21, 1993
- Hitachi, Ltd.
- Noriyuki Kumasaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Rotating drum having a center of gravity in registry with an axis o...
- Patent number 5,159,505
- Issue date Oct 27, 1992
- Hitachi, Ltd.
- Yasuaki Horiuchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic head
- Patent number 5,157,569
- Issue date Oct 20, 1992
- Hitachi, Ltd.
- Noriyuki Kumasaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Longitudinal magnetic recording media and magnetic memory units
- Patent number 5,147,732
- Issue date Sep 15, 1992
- Hitachi, Ltd.
- Yoshihiro Shiroishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Amorphous magnetic alloy of Co-Nb-Zr system and magnetic head made...
- Patent number 4,972,285
- Issue date Nov 20, 1990
- Hitachi, Ltd.
- Shigekazu Otomo
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

Information Patent Application
METHOD OF POLISHING A MAGNETIC HARD DISC SUBSTRATE
- Publication number 20100203809
- Publication date Aug 12, 2010
- NIHON MICRO COATING CO., LTD.
- Noriyuki Kumasaka
- C01 - INORGANIC CHEMISTRY
Information Patent Application
METHOD FOR POLISHING TAPE-SHAPED SUBSTRATE FOR OXIDE SUPERCONDUCTOR...
- Publication number 20100160170
- Publication date Jun 24, 2010
- NIHON MICRO COATING CO., LTD.
- Sanaki Horimoto
- B24 - GRINDING POLISHING
Information Patent Application
METHOD FOR POLISHING TAPE-SHAPED SUBSTRATE FOR OXIDE SUPERCONDUCTOR...
- Publication number 20100016169
- Publication date Jan 21, 2010
- NIHON MICRO COATING CO., LTD.
- Sanaki Horimoto
- B24 - GRINDING POLISHING
Information Patent Application
METHOD OF PRODUCING POLISHING MATERIAL COMPRISING DIAMOND CLUSTERS
- Publication number 20090188170
- Publication date Jul 30, 2009
- NIHON MICRO COATING CO., LTD.
- Noriyuki Kumasaka
- B24 - GRINDING POLISHING
Information Patent Application
METHOD OF PRODUCING GLASS SUBSTRATE FOR PERPENDICULAR MAGNETIC RECO...
- Publication number 20090163117
- Publication date Jun 25, 2009
- NIHON MICRO COATING CO., LTD.
- Yuji Horie
- B24 - GRINDING POLISHING
Information Patent Application
CLEANING TAPE AND METHOD OF PRODUCING SAME
- Publication number 20090092023
- Publication date Apr 9, 2009
- NIHON MICRO COATING CO., LTD.
- Yuji Horie
- B08 - CLEANING
Information Patent Application
METHOD OF POLISHING TAPE-SHAPED SUBSTRATE AND SUBSTRATE FOR OXIDE S...
- Publication number 20090054243
- Publication date Feb 26, 2009
- NIHON MICRO COATING CO., LTD.
- Yuji Horie
- B24 - GRINDING POLISHING
Information Patent Application
Polishing material and production method therefor
- Publication number 20070231245
- Publication date Oct 4, 2007
- NIHON MICRO COATING CO., LTD.
- Noriyuki Kumasaka
- B24 - GRINDING POLISHING
Information Patent Application
Texturing slurry and texturing method by using same
- Publication number 20070123153
- Publication date May 31, 2007
- NIHON MICRO COATING CO., LTD.
- Noriyuki Kumasaka
- B24 - GRINDING POLISHING
Information Patent Application
Polishing tape and method
- Publication number 20060252355
- Publication date Nov 9, 2006
- NIHON MICRO COATING CO., LTD.
- Noriyuki Kumasaka
- B24 - GRINDING POLISHING
Information Patent Application
Perpendicular magnetic recording disk and method of producing same
- Publication number 20060216551
- Publication date Sep 28, 2006
- Nihon Microcoating Co., Ltd.
- Tatsuya Tanifuji
- G11 - INFORMATION STORAGE
Information Patent Application
Method of producing perpendicular magnetic recording disk
- Publication number 20060027527
- Publication date Feb 9, 2006
- Nihon Microcoating Co., Ltd.
- Yasuyuki Yokota
- B24 - GRINDING POLISHING
Information Patent Application
Glass substrate for perpendicular magnetic recording disk and metho...
- Publication number 20050238927
- Publication date Oct 27, 2005
- Nihon Microcoating Co., Ltd.
- Yuji Horie
- B24 - GRINDING POLISHING
Information Patent Application
Diamond polishing particles and method of producing same
- Publication number 20050086870
- Publication date Apr 28, 2005
- Nihon Microcoating Co., Ltd.
- Noriyuki Kumasaka
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Glass composition, structure, and apparatus using the same
- Publication number 20030158030
- Publication date Aug 21, 2003
- Hitachi, Ltd
- Hiroki Yamamoto
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
Video signal recording apparatus and video signal recording and rep...
- Publication number 20020102096
- Publication date Aug 1, 2002
- Hitachi, Ltd.
- Nobutaka Amada
- G11 - INFORMATION STORAGE
Information Patent Application
Disk drive unit with hydrodynamic fluid bearing unit and disk devic...
- Publication number 20020018315
- Publication date Feb 14, 2002
- Katsutoshi Nii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Disk drive unit with hydrodynamic fluid bearing unit and disk devic...
- Publication number 20010021080
- Publication date Sep 13, 2001
- Katsutoshi Nii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Noriyuki Kumasaka

Person

Patents Grantslast 30 patents

Method of producing glass substrate for perpendicular magnetic reco...

Method for polishing tape-shaped substrate for oxide superconductor...

Method for polishing tape-shaped substrate for oxide superconductor...

Cleaning tape and method of producing same

Method of producing polishing material comprising diamond clusters

Method of polishing tape-shaped substrate and substrate for oxide s...

Polishing material comprising diamond clusters

Texturing slurry and texturing method by using same

Magnetic head with sealing glass composition

Glass composition, structure, and apparatus using the same

Disk drive with unbalance correcting mechanism

Disk drive unit with hydrodynamic fluid bearing unit and disk devic...

Disk drive unit with hydrodynamic fluid bearing unit and disk devic...

Video signal recording and reproducing apparatus compatible with an...

Disk apparatus and motor therefor

Disk drive unit with hydrodynamic fluid bearing unit and disk devic...

Glass composition, structure, and apparatus using the same

Video signal recording and reproducing apparatus compatible with an...

Soft magnetic thin film, and magnetic head and magnetic recording d...

Magnetic head with protective film comprising amorphous CaMgSi.sub....

Heat resistant, high saturation magnetic flux density film

Soft magnetic thin film, and magnetic head and magnetic recording d...

Soft magnetic thin film, and magnetic head and magnetic recording d...

Magnetic head and magnetic recording and reproducing apparatus usin...

Material for nonmagnetic oxide substrate and magnetic head

Magnetic head having main and auxiliary magnetic paths

Rotating drum having a center of gravity in registry with an axis o...

Thin film magnetic head

Longitudinal magnetic recording media and magnetic memory units

Amorphous magnetic alloy of Co-Nb-Zr system and magnetic head made...

Patents Applicationslast 30 patents

METHOD OF POLISHING A MAGNETIC HARD DISC SUBSTRATE

METHOD FOR POLISHING TAPE-SHAPED SUBSTRATE FOR OXIDE SUPERCONDUCTOR...

METHOD FOR POLISHING TAPE-SHAPED SUBSTRATE FOR OXIDE SUPERCONDUCTOR...

METHOD OF PRODUCING POLISHING MATERIAL COMPRISING DIAMOND CLUSTERS

METHOD OF PRODUCING GLASS SUBSTRATE FOR PERPENDICULAR MAGNETIC RECO...

CLEANING TAPE AND METHOD OF PRODUCING SAME

METHOD OF POLISHING TAPE-SHAPED SUBSTRATE AND SUBSTRATE FOR OXIDE S...

Polishing material and production method therefor

Texturing slurry and texturing method by using same

Polishing tape and method

Perpendicular magnetic recording disk and method of producing same

Method of producing perpendicular magnetic recording disk

Glass substrate for perpendicular magnetic recording disk and metho...

Diamond polishing particles and method of producing same

Glass composition, structure, and apparatus using the same

Video signal recording apparatus and video signal recording and rep...

Disk drive unit with hydrodynamic fluid bearing unit and disk devic...

Disk drive unit with hydrodynamic fluid bearing unit and disk devic...