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Akira Muroi
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Yoshikawa, JP
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last 30 patents
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Patent Grant
Water-hammer preventing unit for check valve
Patent number
7,128,090
Issue date
Oct 31, 2006
Tozen Corporation
Akira Muroi
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Pipe joint
Patent number
6,979,028
Issue date
Dec 27, 2005
Tozen Corporation
Akira Muroi
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Pipe joint
Patent number
6,880,861
Issue date
Apr 19, 2005
Tozen Corporation
Akira Muroi
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
Information
Patent Application
Pipe joint
Publication number
20050006895
Publication date
Jan 13, 2005
Akira Muroi
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Pipe joint
Publication number
20040245775
Publication date
Dec 9, 2004
Akira Muroi
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...