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Koichi Shimokawa
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Shinjuku-ku, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Magnetic disk and manufacturing method thereof
Patent number
9,984,715
Issue date
May 29, 2018
WD Media, LLC
Koichi Shimokawa
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Lubricant compound for magnetic disk and magnetic disk
Patent number
9,558,778
Issue date
Jan 31, 2017
WD Media (Singapore) Pte. Ltd.
Kota Suzuki
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Magnetic disk and manufacturing method thereof
Patent number
9,177,586
Issue date
Nov 3, 2015
WD Media (Singapore), LLC
Koichi Shimokawa
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Magnetic disk and method of manufacturing the same
Patent number
8,999,533
Issue date
Apr 7, 2015
WD Media (Singapore) Pte. Ltd.
Koichi Shimokawa
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Lubricant for magnetic disk and magnetic disk
Patent number
8,999,534
Issue date
Apr 7, 2015
WD Media (Singapore) Pte. Ltd.
Koichi Shimokawa
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Method of producing a magnetic recording disc
Patent number
8,920,872
Issue date
Dec 30, 2014
WD Media (Singapore) Pte. Ltd.
Kae Itoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of manufacturing a magnetic disk
Patent number
8,846,137
Issue date
Sep 30, 2014
WD Media (Singapore) Pte. Ltd.
Koichi Shimokawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Lubricant for magnetic disc, magnetic disc and method of producing...
Patent number
8,697,262
Issue date
Apr 15, 2014
WD Media (Singapore) Pte. Ltd.
Katsushi Hamakubo
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Lubricant compound for a magnetic disk, magnetic disk, and method o...
Patent number
8,492,011
Issue date
Jul 23, 2013
WD Media (Singapore) Pte, Ltd
Kae Itoh
G11 - INFORMATION STORAGE
Information
Patent Grant
Lubricant for magnetic disk, process for producing the same, and ma...
Patent number
8,178,480
Issue date
May 15, 2012
WD Media (Singapore) Pte. Ltd.
Katsushi Hamakubo
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Magnetic recording disk and method for manufacture thereof
Patent number
8,062,778
Issue date
Nov 22, 2011
WD Meida (Singapore) Pte. Ltd.
Kota Suzuki
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Lubricant for magnetic disks, method for producing the lubricant us...
Patent number
8,012,920
Issue date
Sep 6, 2011
WD Media (Singapore) Pte. Ltd.
Koichi Shimokawa
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Magnetic disk
Patent number
7,833,641
Issue date
Nov 16, 2010
WD Media (Singapore) Pte. Ltd.
Hiroshi Tomiyasu
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Method of producing a lubricant for a magnetic disk, lubricant for...
Patent number
7,531,485
Issue date
May 12, 2009
Hoya Corporation
Kota Hara
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording disk and process for manufacture thereof
Patent number
7,277,254
Issue date
Oct 2, 2007
Hoya Corporation
Koichi Shimokawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording disk and process for manufacture thereof
Patent number
7,252,897
Issue date
Aug 7, 2007
Hoya Corporation
Koichi Shimokawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic disk and method of manufacturing same
Patent number
7,105,241
Issue date
Sep 12, 2006
Hoya Corporation
Koichi Shimokawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording disk and process for manufacture thereof
Patent number
7,045,215
Issue date
May 16, 2006
Hoya Corporation
Koichi Shimokawa
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
MAGNETIC DISK AND MANUFACTURING METHOD THEREOF
Publication number
20180268853
Publication date
Sep 20, 2018
WD Media, LLC
KOICHI SHIMOKAWA
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
MAGNETIC DISK AND MANUFACTURING METHOD THEREOF
Publication number
20160055874
Publication date
Feb 25, 2016
WD MEDIA (SINGAPORE) PTE. LTD.
Koichi SHIMOKAWA
G11 - INFORMATION STORAGE
Information
Patent Application
LUBRICANT FOR MAGNETIC DISK AND MAGNETIC DISK
Publication number
20120276417
Publication date
Nov 1, 2012
WD MEDIA (SINGAPORE) PTE. LTD.
Koichi Shimokawa
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
METHOD OF PRODUCING A MAGNETIC RECORDING DISC
Publication number
20120225217
Publication date
Sep 6, 2012
WD MEDIA (SINGAPORE) PTE. LTD.
KAE ITOH
G11 - INFORMATION STORAGE
Information
Patent Application
LUBRICANT FOR MAGNETIC DISC, MAGNETIC DISC AND METHOD OF PRODUCING...
Publication number
20120148875
Publication date
Jun 14, 2012
WD MEDIA (SINGAPORE) PTE. LTD.
Katsushi Hamakubo
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
MAGNETIC DISK AND MANUFACTURING METHOD THEREOF
Publication number
20120127599
Publication date
May 24, 2012
WD MEDIA (SINGAPORE) PTE. LTD.
Koichi Shimokawa
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
LUBRICANT COMPOUND FOR MAGNETIC DISK AND MAGNETIC DISK
Publication number
20120127601
Publication date
May 24, 2012
WD MEDIA (SINGAPORE) PTE. LTD.
Kota Suzuki
C07 - ORGANIC CHEMISTRY
Information
Patent Application
MAGNETIC DISK AND METHOD OF MANUFACTURING THE SAME
Publication number
20100304186
Publication date
Dec 2, 2010
HOYA CORPORATION
Koichi Shimokawa
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
LUBRICANT COMPOUND FOR A MAGNETIC DISK, MAGNETIC DISK, AND METHOD O...
Publication number
20100246064
Publication date
Sep 30, 2010
HOYA CORPORATION
Kae ITOH
G11 - INFORMATION STORAGE
Information
Patent Application
MAGNETIC DISK AND METHOD OF MANUFACTURING THE SAME
Publication number
20100232065
Publication date
Sep 16, 2010
HOYA CORPORATION
Kota Suzuki
G11 - INFORMATION STORAGE
Information
Patent Application
METHOD OF MANUFACTURING A MAGNETIC DISK
Publication number
20100209601
Publication date
Aug 19, 2010
HOYA CORPORATION
Koichi SHIMOKAWA
G11 - INFORMATION STORAGE
Information
Patent Application
LUBRICANT FOR MAGNETIC DISK, PROCESS FOR PRODUCING THE SAME, AND MA...
Publication number
20100028721
Publication date
Feb 4, 2010
HOYA CORPORATION
Katsushi Hamakubo
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
Magnetic Recording Disk and Method for Manufacture Thereof
Publication number
20090155517
Publication date
Jun 18, 2009
HOYA CORPORATION
Kota Suzuki
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
MAGNETIC RECORDING DISK AND METHOD FOR MANUFACTURE THEREOF
Publication number
20090136784
Publication date
May 28, 2009
HOYA CORPORATION
Kota Suzuki
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
MAGNETIC DISK
Publication number
20090023017
Publication date
Jan 22, 2009
HOYA CORPORATION
Hiroshi Tomiyasu
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
Lubricant for Magnetic Disks, Method for Producing the Lubricant Us...
Publication number
20070298982
Publication date
Dec 27, 2007
Koichi Shimokawa
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
Method of producing a lubricant for a magnetic disk, lubricant for...
Publication number
20060068229
Publication date
Mar 30, 2006
Hoya Corporation
Kota Hara
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
Magnetic recording disk and process for manufacture thereof
Publication number
20050170136
Publication date
Aug 4, 2005
HOYA CORPORATION
Koichi Shimokawa
G11 - INFORMATION STORAGE
Information
Patent Application
Magnetic disk and method of manufacturing same
Publication number
20040213951
Publication date
Oct 28, 2004
HOYA CORPORATION
Koichi Shimokawa
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
Magnetic recording disk and process for manufacture thereof
Publication number
20040185262
Publication date
Sep 23, 2004
Koichi Shimokawa
B32 - LAYERED PRODUCTS
Information
Patent Application
Magnetic recording disk and process for manufacture thereof
Publication number
20040072034
Publication date
Apr 15, 2004
Koichi Shimokawa
G11 - INFORMATION STORAGE