Tsutomu Koyanagi

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Saku, JP

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Patents Grantslast 30 patents

Information Patent Grant
Inverted hybrid thin film magnetic head and method of manufacturing...
- Patent number 6,542,339
- Issue date Apr 1, 2003
- TDK Corporation
- Yoshitaka Sasaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Inverted hybrid thin film magnetic head and method of manufacturing...
- Patent number 6,259,585
- Issue date Jul 10, 2001
- TDK Corporation
- Yoshitaka Sasaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic device with plural valves of magnetostriction
- Patent number 5,570,251
- Issue date Oct 29, 1996
- TDK Corporation
- Osamu Shinoura
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of producing a thin film magnetic head
- Patent number 5,236,735
- Issue date Aug 17, 1993
- TDK Corporation
- Makoto Yoshida
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic recording head with a low resistance coil formed...
- Patent number 5,065,270
- Issue date Nov 12, 1991
- TDK Corporation
- Tsutomu Koyanagi
- G11 - INFORMATION STORAGE