Ippo Hirai

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Yachiyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Soft magnetic alloy, method for making, magnetic core, magnetic shi...
- Patent number 5,252,148
- Issue date Oct 12, 1993
- TDK Corporation
- Masao Shigeta
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Soft magnetic powder and magnetic shield composition
- Patent number 5,207,841
- Issue date May 4, 1993
- TDK Corporation
- Masao Shigeta
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Magnetic shield-forming magnetically soft powder, composition there...
- Patent number 4,923,533
- Issue date May 8, 1990
- TDK Corporation
- Masao Shigeta
- H01 - BASIC ELECTRIC ELEMENTS