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Tetsuo Ishitsuka
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
High strength electric resistance welded steel pipe and method for...
Patent number
10,640,843
Issue date
May 5, 2020
Nippon Steel Corporation
Tetsuo Ishitsuka
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Steel pipe excellent in deformation characteristics and method of p...
Patent number
8,920,583
Issue date
Dec 30, 2014
Nippon Steel & Sumitomo Metal Corporation
Hitoshi Asahi
C21 - METALLURGY OF IRON
Information
Patent Grant
Alloy having high corrosion resistance in environment of high corro...
Patent number
6,060,180
Issue date
May 9, 2000
Nippon Steel Corporation
Tetsuo Ishitsuka
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Alloy and multilayer steel tube having corrosion resistance in fuel...
Patent number
5,620,805
Issue date
Apr 15, 1997
Nippon Steel Corporation
Hiroyuki Ogawa
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Alloy and composite steel tube with corrosion resistance in combust...
Patent number
5,194,222
Issue date
Mar 16, 1993
Nippon Steel Corporation
Hiroyuki Ogawa
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Alloy and composite steel tube with corrosion resistance in combust...
Patent number
5,190,832
Issue date
Mar 2, 1993
Nippon Steel Corporation
Hiroyuki Ogawa
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Patents Applications
last 30 patents
Information
Patent Application
AS-ROLLED TYPE K55 ELECTRIC RESISTANCE WELDED OIL WELL PIPE AND HOT...
Publication number
20180298475
Publication date
Oct 18, 2018
NIPPON STEEL & SUMITOMO METAL CORPORATION
Tetsuo ISHITSUKA
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
HIGH STRENGTH ELECTRIC RESISTANCE WELDED STEEL PIPE, METHOD FOR PRO...
Publication number
20180105893
Publication date
Apr 19, 2018
NIPPON STEEL & SUMITOMO METAL CORPORATION
Tetsuo ISHITSUKA
C21 - METALLURGY OF IRON
Information
Patent Application
HOLLOW STABILIZER, AND STEEL PIPE FOR HOLLOW STABILIZERS AND METHOD...
Publication number
20150176101
Publication date
Jun 25, 2015
Tetsuo Ishitsuka
C21 - METALLURGY OF IRON
Information
Patent Application
STEEL PIPE EXCELLENT IN DEFORMATION CHARACTERISTICS AND METHOD OF P...
Publication number
20100119860
Publication date
May 13, 2010
Asahi Hitoshi
C21 - METALLURGY OF IRON
Information
Patent Application
High Strength Thick-Gauge Electric-Resistance Welded Steel Pipe Exc...
Publication number
20090250146
Publication date
Oct 8, 2009
Tetsuo Ishitsuka
B60 - VEHICLES IN GENERAL
Information
Patent Application
High Strength Seamless Steel Pipe for Machine Structure Use Superio...
Publication number
20090065102
Publication date
Mar 12, 2009
NIPPON STEEL CORPORATION
Yasuhiro Shinohara
C21 - METALLURGY OF IRON