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Toshiyuki Ishibashi
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Nagano-ken, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Magnetic powder, permanent magnet produced therefrom and process fo...
Patent number
6,139,765
Issue date
Oct 31, 2000
Seiko Epson Corporation
Atsunori Kitazawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Rare earth-iron series permanent magnets and method of preparation
Patent number
6,136,099
Issue date
Oct 24, 2000
Seiko Epson Corporation
Koji Akioka
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Rare-earth bonded magnet composition, rare-earth bonded magnet and...
Patent number
5,888,416
Issue date
Mar 30, 1999
Seiko Epson Corporation
Ken Ikuma
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Magnetic powder, permanent magnet produced therefrom and process fo...
Patent number
5,647,886
Issue date
Jul 15, 1997
Seiko Epson Corporation
Atsunori Kitazawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Rare earth cast alloy permanent magnets and methods of preparation
Patent number
5,597,425
Issue date
Jan 28, 1997
Seiko Epson Corporation
Koji Akioka
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Horizontal and vertical displacement detector of wire rope
Patent number
5,581,180
Issue date
Dec 3, 1996
Seiko Epson Corporation
Norio Ito
B61 - RAILWAYS
Information
Patent Grant
Rare earth cast alloy permanent magnets and methods of preparation
Patent number
5,565,043
Issue date
Oct 15, 1996
Seiko Epson Corporation
Koji Akioka
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Rare earth cast alloy permanent magnets and methods of preparation
Patent number
5,560,784
Issue date
Oct 1, 1996
Seiko Epson Corporation
Koji Akioka
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Rare earth cast alloy permanent magnets and methods of preparation
Patent number
5,538,565
Issue date
Jul 23, 1996
Seiko Epson Corporation
Koji Akioka
B22 - CASTING POWDER METALLURGY