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Yoshimasa Aoki
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Kashiwa, JP
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last 30 patents
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Patent Grant
High-temperature wear-resistant sintered alloy
Patent number
6,340,377
Issue date
Jan 22, 2002
Hitachi Powdered Metals Co., Ltd.
Hideaki Kawata
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Sintered alloy having superior wear resistance
Patent number
6,302,937
Issue date
Oct 16, 2001
Hitachi Powdered Metals, Co., Ltd.
Koichiro Hayashi
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Sintered alloy having superb wear resistance and process for produc...
Patent number
6,251,157
Issue date
Jun 26, 2001
Hitachi Powdered Metals Co., Ltd.
Yoshimasa Aoki
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
High-temperature wear-resistant sintered alloy
Patent number
5,949,003
Issue date
Sep 7, 1999
Nissan Motor Co., Ltd.
Yoshimasa Aoki
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Wear-resistant sintered alloy, and its production method
Patent number
5,834,664
Issue date
Nov 10, 1998
Hitachi Powdered Metals Co., Ltd.
Koichi Aonuma
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Wear-resistant sintered alloy, and its production method
Patent number
5,824,922
Issue date
Oct 20, 1998
Hitachi Powdered Metals Co., Ltd.
Koichi Aonuma
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Source powder for wear-resistant sintered material
Patent number
5,753,005
Issue date
May 19, 1998
Hitachi Powdered Metals Co., Ltd.
Yoshimasa Aoki
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Sintered iron alloy resistant to abrasion at high temperature and m...
Patent number
5,529,602
Issue date
Jun 25, 1996
Hitachi Powdered Metals Co., Ltd.
Kei Ishii
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Multi-phase sintered alloy composition and method of manufacturing...
Patent number
5,207,821
Issue date
May 4, 1993
Hitachi Powdered Metals Co., Ltd.
Yutaka Ikenoue
B22 - CASTING POWDER METALLURGY