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Kazuhiko Hosomi
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Kokubunji, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Microwave-assisted magnetic recording (MAMR) head with an inclined...
Patent number
9,390,733
Issue date
Jul 12, 2016
HGST Netherlans B.V.
Kimitoshi Etoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording head with non-magnetic bump structure formed on...
Patent number
9,230,573
Issue date
Jan 5, 2016
HGST Netherlands B.V.
Kimitoshi Etoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Microwave assisted magnetic recording (MAMR) write head and system
Patent number
9,142,227
Issue date
Sep 22, 2015
HGST Netherlands B.V.
Kimitoshi Etoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head having a short yoke with a tapered coil structure
Patent number
9,076,462
Issue date
Jul 7, 2015
HGST Netherlands B.V.
Kimitoshi Etoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical semiconductor device and optical waveguide
Patent number
8,965,153
Issue date
Feb 24, 2015
Hitachi Ltd.
Makoto Takahashi
G02 - OPTICS
Information
Patent Grant
Perpendicular magnetic write head having a main magnetic write pole...
Patent number
8,964,331
Issue date
Feb 24, 2015
HGST Netherlands B.V.
Mikito Sugiyama
G11 - INFORMATION STORAGE
Information
Patent Grant
Perpendicular recording head with leading bump in the main pole hav...
Patent number
8,941,948
Issue date
Jan 27, 2015
HGST Netherlands B.V.
Kimitoshi Etoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Microwave-assisted magnetic recording (MAMR) head with a current co...
Patent number
8,837,088
Issue date
Sep 16, 2014
HGST Netherlands B.V.
Hisashi Kimura
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording head and magnetic recording apparatus
Patent number
8,824,103
Issue date
Sep 2, 2014
Hitachi, Ltd.
Masato Shiimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording head with non-conformal side shield gap
Patent number
8,570,686
Issue date
Oct 29, 2013
HGST Netherlands B.V.
Kazuhiko Hosomi
G11 - INFORMATION STORAGE
Information
Patent Grant
Microwave-assisted magnetic recording head having a current confine...
Patent number
8,472,135
Issue date
Jun 25, 2013
HGST Netherlands B.V.
Kikuo Kusukawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Optical transceiver module
Patent number
8,303,195
Issue date
Nov 6, 2012
Hitachi, Ltd.
Koichiro Adachi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmitter/receiver module
Patent number
8,036,533
Issue date
Oct 11, 2011
Hitachi, Ltd.
Kazuhiko Hosomi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical module
Patent number
7,616,845
Issue date
Nov 10, 2009
Hitachi, Ltd.
Yasunobu Matsuoka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Variable dispersion compensator
Patent number
7,590,356
Issue date
Sep 15, 2009
Hitachi Metals Ltd.
Toshiki Sugawara
G02 - OPTICS
Information
Patent Grant
Micro sensor device
Patent number
7,450,789
Issue date
Nov 11, 2008
Hitachi, Ltd.
Kazuhiko Hosomi
G01 - MEASURING TESTING
Information
Patent Grant
Micro-spectroscopic measuring device and micro-chemical system
Patent number
7,145,146
Issue date
Dec 5, 2006
Hitachi, Ltd.
Taro Ogawa
G01 - MEASURING TESTING
Information
Patent Grant
Optical waveguides and optical devices with optical waveguides
Patent number
6,931,189
Issue date
Aug 16, 2005
Hitachi, Ltd.
Youngkun Lee
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Dispersion compensator and optical transmission system using same
Patent number
6,731,846
Issue date
May 4, 2004
Hitachi, Ltd.
Kazuhiko Hosomi
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Semiconductor laser device, semiconductor laser array device and op...
Patent number
6,546,034
Issue date
Apr 8, 2003
Hitachi, Ltd.
Masaaki Komori
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
MAGNETIC HEAD HAVING A SHORT YOKE WITH A TAPERED COIL STRUCTURE
Publication number
20150154987
Publication date
Jun 4, 2015
HGST NETHERLANDS B.V.
Kimitoshi Etoh
G11 - INFORMATION STORAGE
Information
Patent Application
MICROWAVE-ASSISTED MAGNETIC RECORDING (MAMR) HEAD WITH AN INCLINED...
Publication number
20150103434
Publication date
Apr 16, 2015
HGST NETHERLANDS B.V.
Kimitoshi Etoh
G11 - INFORMATION STORAGE
Information
Patent Application
PERPENDICULAR MAGNETIC RECORDING HEAD HAVING A MAIN POLE AND A SUB-...
Publication number
20130342937
Publication date
Dec 26, 2013
Hitachi Global Storage Technologies Netherlands B.V
Mikito Sugiyama
G11 - INFORMATION STORAGE
Information
Patent Application
PERPENDICULAR RECORDING HEAD WITH LEADING BUMP IN THE MAIN POLE HAV...
Publication number
20130335854
Publication date
Dec 19, 2013
HGST NETHERLANDS B.V.
Kimitoshi Etoh
G11 - INFORMATION STORAGE
Information
Patent Application
MAGNETIC RECORDING HEAD WITH NON-CONFORMAL SIDE SHIELD GAP
Publication number
20130242431
Publication date
Sep 19, 2013
Hitachi Global Storage Technologies Netherlands B.V.
Kazuhiko Hosomi
G11 - INFORMATION STORAGE
Information
Patent Application
MAGNETIC RECORDING HEAD AND MAGNETIC RECORDING APPARATUS
Publication number
20130057980
Publication date
Mar 7, 2013
Hitachi, Ltd.
Masato SHIIMOTO
G11 - INFORMATION STORAGE
Information
Patent Application
Optical Transceiver Module
Publication number
20100278482
Publication date
Nov 4, 2010
Hitachi, Ltd
Koichiro Adachi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL MODULE AND WAVELENGTH DIVISION MULTIPLEXING OPTICAL MODULE
Publication number
20100247043
Publication date
Sep 30, 2010
Hitachi, Ltd
Toshiki SUGAWARA
G02 - OPTICS
Information
Patent Application
Optical device
Publication number
20090263078
Publication date
Oct 22, 2009
Hitachi, Ltd.
Kazuhiko Hosomi
G02 - OPTICS
Information
Patent Application
Optical Transmitter/Receiver Module
Publication number
20090103923
Publication date
Apr 23, 2009
Kazuhiko HOSOMI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL MODULE
Publication number
20090097847
Publication date
Apr 16, 2009
Kazuhiko HOSOMI
G02 - OPTICS
Information
Patent Application
Optical Module
Publication number
20080285914
Publication date
Nov 20, 2008
Hitachi, Ltd.
Yasunobu Matsuoka
G02 - OPTICS
Information
Patent Application
OPTICAL SEMICONDUCTOR DEVICE AND OPTICAL WAVEGUIDE
Publication number
20080137695
Publication date
Jun 12, 2008
Makoto Takahashi
G02 - OPTICS
Information
Patent Application
Variable dispersion compensator
Publication number
20070147840
Publication date
Jun 28, 2007
Toshiki Sugawara
G02 - OPTICS
Information
Patent Application
Micro sensor device
Publication number
20070014505
Publication date
Jan 18, 2007
Kazuhiko Hosomi
G02 - OPTICS
Information
Patent Application
Micro-spectroscopic measuring device and micro-chemical system
Publication number
20050017178
Publication date
Jan 27, 2005
Taro Ogawa
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Optical waveguides and optical devices with optical waveguides
Publication number
20030202764
Publication date
Oct 30, 2003
Youngkun Lee
G02 - OPTICS
Information
Patent Application
Optical functional device and fabrication process for the same
Publication number
20030185532
Publication date
Oct 2, 2003
Kazuhiko Hosomi
G02 - OPTICS
Information
Patent Application
Dispersion compensator and optical transmission system using same
Publication number
20020172456
Publication date
Nov 21, 2002
Kazuhiko Hosomi
B82 - NANO-TECHNOLOGY
Information
Patent Application
Semiconductor laser device, semiconductor laser array device and op...
Publication number
20010006529
Publication date
Jul 5, 2001
Masaaki Komori
H01 - BASIC ELECTRIC ELEMENTS