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Akira Fukuno
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Hard magnetic composition, permanent magnet powder, method for perm...
Patent number
7,465,363
Issue date
Dec 16, 2008
TDK Corporation
Atsushi Sakamoto
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
R-T-B system rare earth permanent magnet
Patent number
7,314,531
Issue date
Jan 1, 2008
TDK Corporation
Chikara Ishizaka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
R-T-B system rare earth permanent magnet
Patent number
7,311,788
Issue date
Dec 25, 2007
TDK Corporation
Gouichi Nishizawa
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Method for manufacturing R-T-B system rare earth permanent magnet
Patent number
7,255,751
Issue date
Aug 14, 2007
TDK Corporation
Gouichi Nishizawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method for manufacturing R-T-B system rare earth permanent magnet
Patent number
7,255,752
Issue date
Aug 14, 2007
TDK Corporation
Chikara Ishizaka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
R-T-B system rare earth permanent magnet and compound for magnet
Patent number
7,192,493
Issue date
Mar 20, 2007
TDK Corporation
Gouichi Nishizawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Rare earth permanent magnet
Patent number
6,833,036
Issue date
Dec 21, 2004
TDK Corporation
Makoto Nakane
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
R-T-B system rare earth permanent magnet
Patent number
6,811,620
Issue date
Nov 2, 2004
TDK Corporation
Chikara Ishizaka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method for preparing permanent magnet material, chill roll, permane...
Patent number
5,993,939
Issue date
Nov 30, 1999
TDK Corporation
Akira Fukuno
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Preparation of magnet
Patent number
5,916,376
Issue date
Jun 29, 1999
TDK Corporation
Akira Fukuno
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Sintered magnet and method for making
Patent number
5,834,663
Issue date
Nov 10, 1998
TDK Corporation
Akira Fukuno
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Magnet and bonded magnet
Patent number
5,750,044
Issue date
May 12, 1998
TDK Corporation
Tetsuhito Yoneyama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method for preparing permanent magnet material, chill roll, permane...
Patent number
5,665,177
Issue date
Sep 9, 1997
TDK Corporation
Akira Fukuno
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Sintered magnet and method for making
Patent number
5,641,363
Issue date
Jun 24, 1997
TDK Corporation
Akira Fukuno
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Permanent magnet material and method for making
Patent number
5,309,977
Issue date
May 10, 1994
TDK Corporation
Tetsuhito Yoneyama
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Permanent magnet material and method for making
Patent number
5,209,789
Issue date
May 11, 1993
TDK Corporation
Tetsuhito Yoneyama
B22 - CASTING POWDER METALLURGY
Patents Applications
last 30 patents
Information
Patent Application
Hard magnetic composition, permanent magnet powder, method for perm...
Publication number
20060169360
Publication date
Aug 3, 2006
Atsushi Sakamoto
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
R-T-B SYSTEM RARE EARTH PERMANENT MAGNET
Publication number
20040187970
Publication date
Sep 30, 2004
TDK CORPORATION
Chikara Ishizaka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
R-T-B system rare earth permanent magnet
Publication number
20040187969
Publication date
Sep 30, 2004
TDK CORPORATION
Chikara Ishizaka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Method for manufacturing R-T-B system rare earth permanent magnet
Publication number
20040187962
Publication date
Sep 30, 2004
TDK CORPORATION
Chikara Ishizaka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
R-T-B system rare earth permanent magnet
Publication number
20040177899
Publication date
Sep 16, 2004
TDK CORPORATION
Gouichi Nishizawa
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Method for manufacturing R-T-B system rare earth permanent magnet
Publication number
20040166013
Publication date
Aug 26, 2004
TDK CORPORATION
Gouichi Nishizawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
R-T-B system rare earth permanent magnet and compound for magnet
Publication number
20040118484
Publication date
Jun 24, 2004
TDK CORPORATION
Gouichi Nishizawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Rare earth permanent magnet
Publication number
20030141951
Publication date
Jul 31, 2003
Makoto Nakane
H01 - BASIC ELECTRIC ELEMENTS