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Akiyasu Oota
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Sanda-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Case for use in sintering process to produce rare-earth magnet, and...
Patent number
6,743,394
Issue date
Jun 1, 2004
Sumitomo Special Metals Co., Ltd.
Akiyasu Oota
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Milling apparatus and milling method
Patent number
6,736,343
Issue date
May 18, 2004
Sumitomo Special Metals Co., Ltd.
Akiyasu Oota
B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information
Patent Grant
Method for producing rare-earth magnet
Patent number
6,696,015
Issue date
Feb 24, 2004
Sumitomo Special Metals Co., Ltd.
Koki Tokuhara
F27 - FURNACES KILNS OVENS RETORTS
Information
Patent Grant
Milling apparatus and milling method
Patent number
6,474,576
Issue date
Nov 5, 2002
Sumitomo Special Metals Co., Ltd.
Akiyasu Oota
B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information
Patent Grant
Case for use in sintering process to produce rare-earth magnet, and...
Patent number
6,464,931
Issue date
Oct 15, 2002
Sumitomo Special Metals Co., Ltd.
Akiyasu Oota
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method and apparatus for mixing powder with liquid
Patent number
6,464,386
Issue date
Oct 15, 2002
Sumitomo Special Metals Co., Ltd.
Akiyasu Oota
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method of pressing rare earth alloy magnetic powder
Patent number
6,461,565
Issue date
Oct 8, 2002
Sumitomo Special Metals Co., Ltd.
Koki Tokuhara
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Hydrogen pulverizer for rare-earth alloy magnetic material powder u...
Patent number
6,403,024
Issue date
Jun 11, 2002
Sumitomo Special Metals Co., Ltd.
Akiyasu Oota
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for hydrogen-pulverizing a rare earth metal-based magnetic...
Patent number
6,247,660
Issue date
Jun 19, 2001
Sumitomo Special Metals Co., Ltd.
Yasuhiko Imai
B22 - CASTING POWDER METALLURGY
Patents Applications
last 30 patents
Information
Patent Application
Method of pressing rare earth alloy magnetic powder
Publication number
20020197180
Publication date
Dec 26, 2002
Sumitomo Special Metals Co., Ltd.
Koki Tokuhara
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Milling apparatus and milling method
Publication number
20020166908
Publication date
Nov 14, 2002
Sumitomo Special Metals Co. Ltd.
Akiyasu Oota
B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information
Patent Application
Case for use in sintering process to produce rare-earth magnet, and...
Publication number
20020159909
Publication date
Oct 31, 2002
Sumitomo Special Metals Co., Ltd.
Akiyasu Oota
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Method for producing rare-earth magnet
Publication number
20020012600
Publication date
Jan 31, 2002
Koki Tokuhara
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Method of pressing rare earth alloy magnetic powder
Publication number
20020006347
Publication date
Jan 17, 2002
Koki Tokuhara
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...