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Masajiro Takeshita
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Yono, JP
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last 30 patents
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Patent Grant
Wear-resistant member for use in internal combustion engine and met...
Patent number
4,632,074
Issue date
Dec 30, 1986
Nippon Piston Ring Co.
Kentaro Takahashi
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Wear-resistant member for use in an internal combustion engine
Patent number
4,583,502
Issue date
Apr 22, 1986
Nippon Piston Ring Co., Ltd.
Kentaro Takahashi
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Wear resistant ferro-based sintered alloy
Patent number
4,526,617
Issue date
Jul 2, 1985
Nippon Piston Ring Co., Ltd.
Takeshi Hiraoka
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Abrasion resistant sintered alloy for internal combustion engines
Patent number
4,360,383
Issue date
Nov 23, 1982
Nippon Piston Ring Co., Ltd.
Kentaro Takahashi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Abrasion resistant ferro-based sintered alloy
Patent number
4,348,232
Issue date
Sep 7, 1982
Nippon Piston Ring Co., Ltd.
Takeshi Hiraoka
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Abrasion resistant sintered alloy for internal combustion engines
Patent number
4,345,943
Issue date
Aug 24, 1982
Nippon Piston Ring Co., Ltd.
Kentaro Takahashi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Abrasion resistant sintered alloy for internal combustion engines
Patent number
4,345,942
Issue date
Aug 24, 1982
Nippon Piston Ring Co., Ltd.
Kentaro Takahashi
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Slidable members for prime movers
Patent number
4,243,414
Issue date
Jan 6, 1981
Nippon Piston Ring Co., Ltd.
Kentaro Takahashi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...