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Naoki Sawawatari
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Chiyoda-ku, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Austenitic stainless steel material
Patent number
11,555,232
Issue date
Jan 17, 2023
Nippon Steel Corporation
Nao Otaki
C21 - METALLURGY OF IRON
Information
Patent Grant
Dual phase stainless steel pipe and manufacturing method thereof
Patent number
10,184,160
Issue date
Jan 22, 2019
Nippon Steel & Sumitomo Metal Corporation
Naoki Sawawatari
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Austenitic alloy pipe and method for producing the same
Patent number
9,429,254
Issue date
Aug 30, 2016
Nippon Steel & Sumitomo Metal Corporation
Naoki Sawawatari
C21 - METALLURGY OF IRON
Patents Applications
last 30 patents
Information
Patent Application
AUSTENITIC STAINLESS STEEL MATERIAL
Publication number
20210254201
Publication date
Aug 19, 2021
NIPPON STEEL CORPORATION
Nao OTAKI
C21 - METALLURGY OF IRON
Information
Patent Application
DUAL PHASE STAINLESS STEEL PIPE AND MANUFACTURING METHOD THEREOF
Publication number
20150107724
Publication date
Apr 23, 2015
NIPPON STEEL & SUMITOMO METAL CORPORATION
Naoki Sawawatari
C21 - METALLURGY OF IRON
Information
Patent Application
AUSTENITIC ALLOY PIPE AND METHOD FOR PRODUCING THE SAME
Publication number
20140083576
Publication date
Mar 27, 2014
Nippon Steel & Sumitomo Medtal Corporation
Naoki Sawawatari
C21 - METALLURGY OF IRON