Hirohide Yamada

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Kumagaya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of fabricating a magnetic head by sputter etching
- Patent number 5,052,099
- Issue date Oct 1, 1991
- Hitachi Metals, Ltd.
- Akira Taguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Floating magnetic head having improved static friction coefficient
- Patent number 5,010,429
- Issue date Apr 23, 1991
- Hitachi Metals, Ltd.
- Akira Taguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Ceramic substrate for a thin layer magnetic head
- Patent number 4,681,813
- Issue date Jul 21, 1987
- Hitachi Metals, Ltd.
- Hirohide Yamada
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Magnetic head assembly
- Patent number 4,642,719
- Issue date Feb 10, 1987
- Hitachi Metals, Ltd.
- Shigetoshi Morita
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for producing non-oxide powders
- Patent number 4,460,697
- Issue date Jul 17, 1984
- Hitachi Metals, Ltd.
- Hisao Hara
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Magnetic head device
- Patent number 4,441,132
- Issue date Apr 3, 1984
- Hitachi Metals, Ltd.
- Shigetoshi Morita
- G11 - INFORMATION STORAGE