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Hitachi-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Valve and manufacturing method thereof
Patent number
6,959,916
Issue date
Nov 1, 2005
Hitachi, Ltd.
Mitsuo Chigasaki
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Joint construction of cobalt-based alloy
Patent number
6,896,978
Issue date
May 24, 2005
Hitachi, Ltd.
Yoshihisa Kiyotoki
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Grant
Joint construction of cobalt-based alloy
Patent number
6,889,957
Issue date
May 10, 2005
Hitachi, Ltd.
Yoshihisa Kiyotoki
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Grant
Joint construction of cobalt-based alloy
Patent number
6,886,809
Issue date
May 3, 2005
Hitachi, Ltd.
Yoshihisa Kiyotoki
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Grant
Valve bonded with corrosion and wear proof alloy and apparatuses us...
Patent number
6,672,330
Issue date
Jan 6, 2004
Hitachi, Ltd.
Mitsuo Chigasaki
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Wear resisting sintered alloy and its production, and control rod d...
Patent number
5,787,136
Issue date
Jul 28, 1998
Hitachi, Ltd.
Kunio Miyazaki
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Fe-Cr-Mn Alloy
Patent number
5,278,881
Issue date
Jan 11, 1994
Hitachi, Ltd.
Takahiko Kato
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Fuel assembly for nuclear reactor, method for producing the same an...
Patent number
5,225,154
Issue date
Jul 6, 1993
Hitachi, Ltd.
Masayoshi Kanno
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Grant
Austenitic steel excellent in resistance to neutron irradiation emb...
Patent number
5,116,569
Issue date
May 26, 1992
Hitachi, Ltd.
Shigeki Kasahara
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Magnetic recording apparatus and magnetic head with superconducting...
Patent number
5,109,312
Issue date
Apr 28, 1992
Hitachi, Ltd.
Takahiko Kato
G11 - INFORMATION STORAGE
Information
Patent Grant
Process for controlling oxygen content of superconductive oxide, su...
Patent number
5,096,882
Issue date
Mar 17, 1992
Hitachi, Ltd.
Takahiko Kato
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Nuclear reactor fuel assembly
Patent number
4,842,814
Issue date
Jun 27, 1989
Hitachi, Ltd.
Iwao Takase
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Grant
Zirconium-based alloy with high corrosion resistance
Patent number
4,810,461
Issue date
Mar 7, 1989
Hitachi, Ltd.
Masahisa Inagaki
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Method of cooling weld in steel piping and apparatus therefor
Patent number
4,223,197
Issue date
Sep 16, 1980
Hitachi, Ltd.
Katsuyuki Imai
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
Information
Patent Application
Production of the metallic parts with the alloyed layer containing...
Publication number
20070081916
Publication date
Apr 12, 2007
Mitsuo Chigasaki
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Production of the metallic parts with the alloyed layer containing...
Publication number
20040247477
Publication date
Dec 9, 2004
Mitsuo Chigasaki
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Joint construction of cobalt-based alloy
Publication number
20040056231
Publication date
Mar 25, 2004
Hitachi, Ltd.
Yoshihisa Kiyotoki
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
Valve and manufacturing method thereof
Publication number
20030132415
Publication date
Jul 17, 2003
Hitachi, Ltd.
Mitsuo Chigasaki
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Joint construction of cobalt-based alloy
Publication number
20030129075
Publication date
Jul 10, 2003
Hitachi, Ltd.
Yoshihisa Kiyotoki
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
Joint construction of cobalt-based alloy
Publication number
20030026379
Publication date
Feb 6, 2003
Yoshihisa Kiyotoki
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Application
Valve bonded with corrosion and wear proof alloy and apparatuses us...
Publication number
20010017906
Publication date
Aug 30, 2001
Mitsuo Chigasaki
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...