Naoki Koyama

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic head of magnetoresistance effect type with high resistance...
- Patent number 7,957,109
- Issue date Jun 7, 2011
- Hitachi Global Storage Technologies Netherlands B.V.
- Naoki Koyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetoresistive head and fabricating method thereof, and read writ...
- Patent number 7,675,715
- Issue date Mar 9, 2010
- Hitachi Global Storage Technologies Netherlands B.V.
- Masatoshi Arasawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head with a narrow spacing between magnetic shields at air...
- Patent number 7,586,715
- Issue date Sep 8, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Naoki Koyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic head and magnetic disk apparatus including the same
- Patent number 7,382,576
- Issue date Jun 3, 2008
- Hitachi Global Storage Technologies Japan, Ltd.
- Tomohiro Okada
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for manufacturing magnetic head device
- Patent number 7,159,303
- Issue date Jan 9, 2007
- Hitachi Global Storage Technologies, Ltd.
- Ryoichi Nakatani
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic head and magnetic disk apparatus including the same
- Patent number 7,068,467
- Issue date Jun 27, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Tomohiro Okada
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic apparatus with perpendicular recording medium and head hav...
- Patent number 7,054,120
- Issue date May 30, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Ryoichi Nakatani
- G11 - INFORMATION STORAGE
Information Patent Grant
Manufacturing method of a thin film magnetic head
- Patent number 6,877,212
- Issue date Apr 12, 2005
- Hitachi Global Storage Technologies Japan, Ltd.
- Tomohiro Okada
- G11 - INFORMATION STORAGE
Information Patent Grant
Combination perpendicular magnetic head having shield material form...
- Patent number 6,839,200
- Issue date Jan 4, 2005
- Hitachi, Ltd.
- Hisashi Takano
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head with conductors formed on endlayers of a multilayer f...
- Patent number 6,687,099
- Issue date Feb 3, 2004
- Hitachi, Ltd.
- Ryoichi Nakatani
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head having track width defined by trench portions filled...
- Patent number 6,665,141
- Issue date Dec 16, 2003
- Hitachi, Ltd.
- Hisashi Takano
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of fabricating a magnetic head by focused ion beam etching
- Patent number 6,538,844
- Issue date Mar 25, 2003
- Hitachi, Ltd.
- Hisashi Takano
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic head and magnetic disk apparatus including the same
- Patent number 6,483,663
- Issue date Nov 19, 2002
- Hitachi, Ltd.
- Tomohiro Okada
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus including magnetic head having multilayered...
- Patent number 6,483,677
- Issue date Nov 19, 2002
- Hitachi, Ltd.
- Ryoichi Nakatani
- G11 - INFORMATION STORAGE
Information Patent Grant
Narrow track thin film head including magnetic poles machined by fo...
- Patent number 6,307,707
- Issue date Oct 23, 2001
- Hitachi, Ltd.
- Hisashi Takano
- G11 - INFORMATION STORAGE
Information Patent Grant
Narrow track thin film head having a focused ion beam etched air be...
- Patent number 6,278,578
- Issue date Aug 21, 2001
- Hitachi, Ltd.
- Hisashi Takano
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetoresistance effect elements and magnetic heads using the tunn...
- Patent number 6,278,593
- Issue date Aug 21, 2001
- Hitachi, Ltd.
- Ryoichi Nakatani
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Narrow track thin film magnetic head suitable for high density reco...
- Patent number 6,111,723
- Issue date Aug 29, 2000
- Hitachi, Ltd.
- Hisashi Takano
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetoresistance effect multilayer film with ferromagnetic film su...
- Patent number 6,011,674
- Issue date Jan 4, 2000
- Hitachi, Ltd.
- Ryoichi Nakatani
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Narrow track thin film magnetic head suitable for high density reco...
- Patent number 5,850,326
- Issue date Dec 15, 1998
- Hitachi, Ltd.
- Hisashi Takano
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetoresistance effect reproduction head
- Patent number 5,808,843
- Issue date Sep 15, 1998
- Hitachi, Ltd.
- Toshio Kobayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Multilayer magnetoresistance effect-type magnetic head
- Patent number 5,726,837
- Issue date Mar 10, 1998
- Hitachi, Ltd.
- Ryoichi Nakatani
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetic head and recording and reproducing apparatus having an arr...
- Patent number 5,719,729
- Issue date Feb 17, 1998
- Hitachi, Ltd.
- Naoki Koyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetoresistive head
- Patent number 5,521,005
- Issue date May 28, 1996
- Hitachi, Ltd.
- Masahiro Kitada
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetoresistive read head and magnetic storage system using the same
- Patent number 5,461,526
- Issue date Oct 24, 1995
- Hitachi, Ltd.
- Yoshihiro Hamakawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Multilayer magnetoresistance effect-type magnetic head
- Patent number 5,390,061
- Issue date Feb 14, 1995
- Hitachi, Ltd.
- Ryoichi Nakatani
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetoresistive magnetic head
- Patent number 5,337,203
- Issue date Aug 9, 1994
- Hitachi, Ltd.
- Masahiro Kitada
- G11 - INFORMATION STORAGE
Information Patent Grant
Antiferromagnetic film superior in corrosion resistance, magnetores...
- Patent number 5,287,237
- Issue date Feb 15, 1994
- Hitachi, Ltd.
- Masahiro Kitada
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetoresistive head
- Patent number 5,212,609
- Issue date May 18, 1993
- Hitachi, Ltd.
- Isamu Yuito
- G11 - INFORMATION STORAGE
Information Patent Grant
Integrated magnetic head having a magnetic layer functioning as bot...
- Patent number 5,168,409
- Issue date Dec 1, 1992
- Hitachi, Ltd.
- Naoki Koyama
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Magnetic head of magnetoresistance effect type with high resistance...
- Publication number 20080074803
- Publication date Mar 27, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Naoki Koyama
- G11 - INFORMATION STORAGE
Information Patent Application
Thin film magnetic head and magnetic disk apparatus including the same
- Publication number 20060198051
- Publication date Sep 7, 2006
- Tomohiro Okada
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head and method of manufacturing the same
- Publication number 20060158789
- Publication date Jul 20, 2006
- Hitachi Global Storage Technologies
- Naoki Koyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetoresistance effect elements, magnetic heads and magnetic stor...
- Publication number 20060152862
- Publication date Jul 13, 2006
- Ryoichi Nakatani
- G01 - MEASURING TESTING
Information Patent Application
Magnetoresistive head and fabricating method thereof, and read writ...
- Publication number 20060056112
- Publication date Mar 16, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Masatoshi Arasawa
- G01 - MEASURING TESTING
Information Patent Application
Thin film magnetic head and magnetic disk apparatus including the same
- Publication number 20050024767
- Publication date Feb 3, 2005
- Tomohiro Okada
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetoresistance effect elements, magnetic heads and magnetic stor...
- Publication number 20040090850
- Publication date May 13, 2004
- Hitachi, Ltd.
- Ryoichi Nakatani
- G01 - MEASURING TESTING
Information Patent Application
Narrow track thin film magnetic head and fabrication method thereof
- Publication number 20040080865
- Publication date Apr 29, 2004
- Hitachi, Ltd.
- Hisashi Takano
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetoresistance effect elements, magnetic heads and magnetic stor...
- Publication number 20030117750
- Publication date Jun 26, 2003
- Hitachi, Ltd.
- Ryoichi Nakatani
- G01 - MEASURING TESTING
Information Patent Application
Narrow track thin film magnetic head and fabrication method thereof
- Publication number 20030099063
- Publication date May 29, 2003
- Hitachi, Ltd.
- Hisashi Takano
- G11 - INFORMATION STORAGE
Information Patent Application
Narrow track thin film magnetic head and fabrication method thereof
- Publication number 20020080521
- Publication date Jun 27, 2002
- Hitachi, Ltd.
- Hisashi Takano
- G11 - INFORMATION STORAGE
Information Patent Application
Thin film magnetic heads and a method of producing the same
- Publication number 20020071210
- Publication date Jun 13, 2002
- Hitachi, Ltd.
- Takashi Kawabe
- G11 - INFORMATION STORAGE
Information Patent Application
Thin film magnetic heads and a method of producing the same
- Publication number 20020060880
- Publication date May 23, 2002
- Hitachi, Ltd.
- Takashi Kawabe
- G11 - INFORMATION STORAGE
Information Patent Application
THIN FILM MAGNETIC HEAD AND MAGNETIC DISK APPARATUS INCLUDING THE SAME
- Publication number 20020041463
- Publication date Apr 11, 2002
- TOMOHIRO OKADA
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetoresistance effect elements, magnetic heads and magnetic stor...
- Publication number 20020018325
- Publication date Feb 14, 2002
- Hitachi, Ltd.
- Ryoichi Nakatani
- B82 - NANO-TECHNOLOGY
Information Patent Application
Thin film magnetic head and magnetic disk apparatus including the same
- Publication number 20020013996
- Publication date Feb 7, 2002
- Hitachi, Ltd
- Tomohiro Okada
- G11 - INFORMATION STORAGE

Naoki Koyama

Person

Patents Grantslast 30 patents

Magnetic head of magnetoresistance effect type with high resistance...

Magnetoresistive head and fabricating method thereof, and read writ...

Magnetic head with a narrow spacing between magnetic shields at air...

Thin film magnetic head and magnetic disk apparatus including the same

Method for manufacturing magnetic head device

Thin film magnetic head and magnetic disk apparatus including the same

Magnetic apparatus with perpendicular recording medium and head hav...

Manufacturing method of a thin film magnetic head

Combination perpendicular magnetic head having shield material form...

Magnetic head with conductors formed on endlayers of a multilayer f...

Magnetic head having track width defined by trench portions filled...

Method of fabricating a magnetic head by focused ion beam etching

Thin film magnetic head and magnetic disk apparatus including the same

Magnetic disk apparatus including magnetic head having multilayered...

Narrow track thin film head including magnetic poles machined by fo...

Narrow track thin film head having a focused ion beam etched air be...

Magnetoresistance effect elements and magnetic heads using the tunn...

Narrow track thin film magnetic head suitable for high density reco...

Magnetoresistance effect multilayer film with ferromagnetic film su...

Narrow track thin film magnetic head suitable for high density reco...

Magnetoresistance effect reproduction head

Multilayer magnetoresistance effect-type magnetic head

Magnetic head and recording and reproducing apparatus having an arr...

Magnetoresistive head

Magnetoresistive read head and magnetic storage system using the same

Multilayer magnetoresistance effect-type magnetic head

Magnetoresistive magnetic head

Antiferromagnetic film superior in corrosion resistance, magnetores...

Magnetoresistive head

Integrated magnetic head having a magnetic layer functioning as bot...

Patents Applicationslast 30 patents

Magnetic head of magnetoresistance effect type with high resistance...

Thin film magnetic head and magnetic disk apparatus including the same

Magnetic head and method of manufacturing the same

Magnetoresistance effect elements, magnetic heads and magnetic stor...

Magnetoresistive head and fabricating method thereof, and read writ...

Thin film magnetic head and magnetic disk apparatus including the same

Magnetoresistance effect elements, magnetic heads and magnetic stor...

Narrow track thin film magnetic head and fabrication method thereof

Magnetoresistance effect elements, magnetic heads and magnetic stor...

Narrow track thin film magnetic head and fabrication method thereof

Narrow track thin film magnetic head and fabrication method thereof

Thin film magnetic heads and a method of producing the same

Thin film magnetic heads and a method of producing the same

THIN FILM MAGNETIC HEAD AND MAGNETIC DISK APPARATUS INCLUDING THE SAME

Magnetoresistance effect elements, magnetic heads and magnetic stor...

Thin film magnetic head and magnetic disk apparatus including the same