Yohei Koyanagi

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Thin film magnetic head having similarly structured resistive film...
- Patent number 8,427,790
- Issue date Apr 23, 2013
- TDK Corporation
- Kei Hirata
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic head and magnetic disk device
- Patent number 8,009,392
- Issue date Aug 30, 2011
- TDK Corporation
- Takayasu Kanaya
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of manufacturing a thin-film magnetic head having an element...
- Patent number 7,810,226
- Issue date Oct 12, 2010
- TDK Corporation
- Hiraku Hirabayashi
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Thin film magnetic head and magnetic disk device
- Publication number 20100177440
- Publication date Jul 15, 2010
- TDK Corporation
- Takayasu Kanaya
- G01 - MEASURING TESTING
Information Patent Application
Thin film magnetic head, magnetic head slider, head gimbal assembly...
- Publication number 20090323222
- Publication date Dec 31, 2009
- TDK Corporation
- Kei Hirata
- G11 - INFORMATION STORAGE
Information Patent Application
Thin-film element having lower layer with narrower width and the th...
- Publication number 20070223140
- Publication date Sep 27, 2007
- TDK Corporation
- Hiraku Hirabayashi
- G11 - INFORMATION STORAGE