Masatake Hirai

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Kyoto, JP

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Patents Grantslast 30 patents

Information Patent Grant
Fabrication method for transformers with an amorphous core
- Patent number 5,226,222
- Issue date Jul 13, 1993
- Daihen Corporation
- Katsumi Hanaoka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Stationary induction electric apparatus
- Patent number 5,055,815
- Issue date Oct 8, 1991
- Daihen Corporation
- Yasuo Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing wound transformer cores
- Patent number 4,972,573
- Issue date Nov 27, 1990
- Daihen Corporation
- Yasuo Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing a stationary induction electric apparatus
- Patent number 4,970,776
- Issue date Nov 20, 1990
- Daihen Corporation
- Yasuo Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Annealing furnace for annealing magnetic cores in a magnetic field
- Patent number 4,649,248
- Issue date Mar 10, 1987
- Allied Corporation
- Hiroshi Yamaguchi
- C21 - METALLURGY OF IRON
Information Patent Grant
Transformer with toroidal magnetic core
- Patent number 4,639,707
- Issue date Jan 27, 1987
- Allied Corporation
- Kazuhiro Tanaka
- H01 - BASIC ELECTRIC ELEMENTS