Ayumu ISHIHARA

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Kamisato, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for optically inspecting a magnetic disk
- Patent number 8,634,070
- Issue date Jan 21, 2014
- Hitachi High-Technologies Corporation
- Ayumu Ishihara
- G01 - MEASURING TESTING
Information Patent Grant
Optical surface defect inspection apparatus and optical surface def...
- Patent number 8,547,547
- Issue date Oct 1, 2013
- Hitachi High-Technologies Corporation
- Shintaro Tamura
- G01 - MEASURING TESTING
Information Patent Grant
Method and its apparatus for inspecting a magnetic disk
- Patent number 8,295,000
- Issue date Oct 23, 2012
- Hitachi High-Technologies Corporation
- Kenichi Shitara
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical checking method and apparatus for defects in magnetic disks
- Patent number 8,208,356
- Issue date Jun 26, 2012
- Hitachi High-Technologies Corporation
- Ayumu Ishihara
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for detecting surface defects in patterned media
- Patent number 8,169,868
- Issue date May 1, 2012
- Hitachi High-Technologies Corporation
- Ayumu Ishihara
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR OPTICALLY INSPECTING A MAGNETIC DISK
- Publication number 20130258325
- Publication date Oct 3, 2013
- Hitachi High-Technologies Corporation
- Ayumu ISHIHARA
- G01 - MEASURING TESTING
Information Patent Application
OPTICAL SURFACE DEFECT INSPECTION APPARATUS AND OPTICAL SURFACE DEF...
- Publication number 20120075625
- Publication date Mar 29, 2012
- Shintaro TAMURA
- G01 - MEASURING TESTING
Information Patent Application
METHOD AND ITS APPARATUS FOR INSPECTING A MAGNETIC DISK
- Publication number 20110188143
- Publication date Aug 4, 2011
- Hitachi High-Technologies Corporation
- Kenichi SHITARA
- G11 - INFORMATION STORAGE
Information Patent Application
OPTICAL CHECKING METHOD AND APPARATUS FOR DEFECTS IN MAGNETIC DISKS
- Publication number 20110158073
- Publication date Jun 30, 2011
- Ayumu ISHIHARA
- G11 - INFORMATION STORAGE
Information Patent Application
METHOD FOR DETECTING SURFACE DEFECTS IN PATTERNED MEDIA
- Publication number 20100246357
- Publication date Sep 30, 2010
- Hitachi High-Technologies Corporation
- Ayumu ISHIHARA
- G11 - INFORMATION STORAGE