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Hiroaki Arai
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Osaka, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Eddy current flaw detection device
Patent number
11,415,549
Issue date
Aug 16, 2022
Hitachi Zosen Corporation
Hiroaki Arai
G01 - MEASURING TESTING
Information
Patent Grant
Eddy current flaw detection device and eddy current flaw detection...
Patent number
11,320,401
Issue date
May 3, 2022
Hitachi Zosen Corporation
Hiroaki Arai
G01 - MEASURING TESTING
Information
Patent Grant
Eddy current flaw detection device
Patent number
11,143,621
Issue date
Oct 12, 2021
Hitachi Zosen Corporation
Hiroaki Arai
G01 - MEASURING TESTING
Information
Patent Grant
Concrete cask
Patent number
10,923,241
Issue date
Feb 16, 2021
Hitachi Zosen Corporation
Hiroaki Arai
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Grant
Door structure for floating flap gate
Patent number
9,926,682
Issue date
Mar 27, 2018
Hitachi Zosen Corporation
Hiroaki Arai
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Containment cask for radioactive material
Patent number
9,779,844
Issue date
Oct 3, 2017
Hitachi Zosen Corporation
Hiroaki Arai
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Grant
Plastic sorter
Patent number
6,720,514
Issue date
Apr 13, 2004
Hitachi Zosen Corporation
Tetsuya Inoue
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Blasting apparatus, blasting method and retainer member used for th...
Patent number
6,431,074
Issue date
Aug 13, 2002
Hitachi Zosen Corporation
Hiroaki Arai
F42 - AMMUNITION BLASTING
Information
Patent Grant
Method and apparatus for separating plastic
Patent number
6,426,474
Issue date
Jul 30, 2002
Hitachi Zosen Corporation
Hidehiko Maehata
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Blasting apparatus
Patent number
6,408,761
Issue date
Jun 25, 2002
Hitachi Zosen Corporation
Hiroaki Arai
F42 - AMMUNITION BLASTING
Information
Patent Grant
Blasting apparatus and blasting method
Patent number
6,389,973
Issue date
May 21, 2002
Hitachi Zosen Corporation
Hiroaki Arai
F42 - AMMUNITION BLASTING
Information
Patent Grant
Demolishing apparatus using discharge impulse
Patent number
6,318,268
Issue date
Nov 20, 2001
Hitachi Zosen Corporation
Hidehiko Maehata
F42 - AMMUNITION BLASTING
Information
Patent Grant
Blasting apparatus
Patent number
6,298,785
Issue date
Oct 9, 2001
Hitachi Zosen Corporation
Hidehiko Maehata
F42 - AMMUNITION BLASTING
Information
Patent Grant
Plasma blasting with coaxial electrodes
Patent number
6,283,555
Issue date
Sep 4, 2001
Hitachi Zosen Corporation
Hiroaki Arai
F42 - AMMUNITION BLASTING
Information
Patent Grant
Destroying apparatus and method, and holding member for use in that...
Patent number
6,279,477
Issue date
Aug 28, 2001
Hitachi Zosen Corporation
Hiroaki Arai
F42 - AMMUNITION BLASTING
Information
Patent Grant
Discharge destroying method, discharge destroying device and method...
Patent number
6,145,934
Issue date
Nov 14, 2000
Hitachi Zosen Corporation
Hiroaki Arai
F42 - AMMUNITION BLASTING
Information
Patent Grant
Apparatus to prevent the entrance of aquatic species into the intak...
Patent number
5,078,542
Issue date
Jan 7, 1992
Hitachi Zosen Corporation
Tohru Yoshikawa
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Patents Applications
last 30 patents
Information
Patent Application
EDDY CURRENT FLAW DETECTION DEVICE
Publication number
20200292500
Publication date
Sep 17, 2020
Hitachi Zosen Corporation
Hiroaki ARAI
G01 - MEASURING TESTING
Information
Patent Application
EDDY CURRENT FLAW DETECTION DEVICE AND EDDY CURRENT FLAW DETECTION...
Publication number
20200284761
Publication date
Sep 10, 2020
Hitachi Zosen Corporation
Hiroaki ARAI
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Application
EDDY CURRENT FLAW DETECTION DEVICE
Publication number
20200278321
Publication date
Sep 3, 2020
Hitachi Zosen Corporation
Hiroaki ARAI
G01 - MEASURING TESTING
Information
Patent Application
CONCRETE CASK
Publication number
20200035371
Publication date
Jan 30, 2020
HITACHI ZOSEN CORPORATION
Hiroaki ARAI
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Application
CONTAINMENT CASK FOR RADIOACTIVE MATERIAL
Publication number
20160284431
Publication date
Sep 29, 2016
Hitachi Zosen Corporation
Hiroaki ARAI
G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
Information
Patent Application
PIPE
Publication number
20150300535
Publication date
Oct 22, 2015
Hitachi Zosen Corporation
Donghui MA
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
PIPE AND METHOD FOR MANUFACTURING PIPE
Publication number
20150075663
Publication date
Mar 19, 2015
Hitachi Zosen Corporation
Donghui Ma
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
DOOR STRUCTURE FOR FLOATING FLAP GATE
Publication number
20140193202
Publication date
Jul 10, 2014
HITACHI ZOSEN CORPORATION
Hiroaki Arai
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Application
Blasting apparatus, blasting method and retainer member used for th...
Publication number
20010042485
Publication date
Nov 22, 2001
Hitachi Zosen Corporation
Hiroaki Arai
F42 - AMMUNITION BLASTING