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Hiroaki Tahira
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Kizugawa-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Roughly-shaped steel material for nitrided part, and nitrided part
Patent number
11,827,963
Issue date
Nov 28, 2023
Nippon Steel Corporation
Masato Yuya
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Hot forged steel material
Patent number
11,261,511
Issue date
Mar 1, 2022
Nippon Steel Corporation
Yoko Sueyasu
C21 - METALLURGY OF IRON
Information
Patent Grant
Hot forged product
Patent number
10,975,452
Issue date
Apr 13, 2021
Nippon Steel Corporation
Kison Nishihara
C21 - METALLURGY OF IRON
Information
Patent Grant
Forged crankshaft and method for manufacturing the forged crankshaft
Patent number
9,731,341
Issue date
Aug 15, 2017
Nippon Steel & Sumitomo Metal Corporation
Hiroaki Tahira
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Forged crankshaft
Patent number
9,239,075
Issue date
Jan 19, 2016
Nippon Steel & Sumitomo Metal Corporation
Kisung Kim
C21 - METALLURGY OF IRON
Information
Patent Grant
Steel for induction hardening and crankshaft manufactured using the...
Patent number
9,234,265
Issue date
Jan 12, 2016
Nippon Steel & Sumitomo Metal Corporation
Yuta Mizobe
C21 - METALLURGY OF IRON
Information
Patent Grant
Steel for machine structural use and method of producing same
Patent number
6,838,048
Issue date
Jan 4, 2005
Sumitomo Metal Industries, Ltd.
Takayuki Nishi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Steel for machine structural use
Patent number
6,797,231
Issue date
Sep 28, 2004
Sumitomo Metal Industries, Ltd.
Naoki Matsui
C21 - METALLURGY OF IRON
Patents Applications
last 30 patents
Information
Patent Application
ROUGHLY-SHAPED STEEL MATERIAL FOR NITRIDED PART, AND NITRIDED PART
Publication number
20220010416
Publication date
Jan 13, 2022
Nippon Steel Corporation
Masato YUYA
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Application
HOT FORGED STEEL MATERIAL
Publication number
20210189532
Publication date
Jun 24, 2021
NIPPON STEEL CORPORATION
Yoko SUEYASU
C21 - METALLURGY OF IRON
Information
Patent Application
HOT FORGED PRODUCT
Publication number
20190127817
Publication date
May 2, 2019
NIPPON STEEL & SUMITOMO METAL CORPORATION
Kison NISHIHARA
C21 - METALLURGY OF IRON
Information
Patent Application
FORGED CRANKSHAFT AND METHOD FOR MANUFACTURING THE FORGED CRANKSHAFT
Publication number
20150321245
Publication date
Nov 12, 2015
NIPPON STEEL & SUMITOMO METAL CORPORATION
Hiroaki TAHIRA
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
STEEL FOR INDUCTION HARDENING AND CRANKSHAFT MANUFACTURED BY USING...
Publication number
20140182414
Publication date
Jul 3, 2014
NIPPON STEEL & SUMITOMO METAL CORPORATION
Kisung Kim
C21 - METALLURGY OF IRON
Information
Patent Application
STEEL FOR INDUCTION HARDENING AND CRANKSHAFT MANUFACTURED USING THE...
Publication number
20130156630
Publication date
Jun 20, 2013
NIPPON STEEL & SUMITOMO METAL CORPORATION
Yuta Mizobe
C21 - METALLURGY OF IRON
Information
Patent Application
FORGED CRANKSHAFT
Publication number
20130087014
Publication date
Apr 11, 2013
NIPPON STEEL & SUMITOMO METAL CORPORATION
Kisung Kim
C21 - METALLURGY OF IRON
Information
Patent Application
Steel for nitrocarburizing use, steel product for nitrocarburizing...
Publication number
20090304543
Publication date
Dec 10, 2009
SUMITOMO METAL INDUSTRIES, LTD.
Makoto EGASHIRA
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Steel for machine structural use
Publication number
20030138343
Publication date
Jul 24, 2003
Naoki Matsui
C21 - METALLURGY OF IRON
Information
Patent Application
Steel for machine structural use and method of producing same
Publication number
20030084965
Publication date
May 8, 2003
Sumitomo Metal Industries, Ltd.
Takayuki Nishi
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...