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Takayuki Kisu
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Hokkaido, JP
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Patents Grants
last 30 patents
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Patent Grant
High strength spring-use heat treated steel
Patent number
8,845,825
Issue date
Sep 30, 2014
Nippon Steel & Sumitomo Metal Corporation
Masayuki Hashimura
C21 - METALLURGY OF IRON
Information
Patent Grant
High strength steel wire for spring
Patent number
8,734,600
Issue date
May 27, 2014
Nippon Steel & Sumitomo Metal Corporation
Masayuki Hashimura
C21 - METALLURGY OF IRON
Patents Applications
last 30 patents
Information
Patent Application
HIGH STRENGTH STEEL WIRE FOR SPRING
Publication number
20120125489
Publication date
May 24, 2012
Masayuki Hashimura
C21 - METALLURGY OF IRON
Information
Patent Application
High Strength Spring Steel and High Strength Heat Treated Steel Wir...
Publication number
20100028196
Publication date
Feb 4, 2010
Masayuki Hashimura
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
High strength spring-use heat treated steel
Publication number
20090205753
Publication date
Aug 20, 2009
Masayuki Hashimura
C21 - METALLURGY OF IRON
Information
Patent Application
High strength spring-use heat treated steel
Publication number
20090092516
Publication date
Apr 9, 2009
Masayuki Hashimura
C21 - METALLURGY OF IRON
Information
Patent Application
High Strength Spring Steel and Steel Wire
Publication number
20080279714
Publication date
Nov 13, 2008
Masayuki Hashimura
C21 - METALLURGY OF IRON