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Tokyo, JP
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last 30 patents
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Patent Grant
Method for cutting off water in pipeline and structure of connectio...
Patent number
5,224,742
Issue date
Jul 6, 1993
Toa Grout Kogyo Kabushiki Kaisha
Sinkiti Ooka
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Liner for pipeline repair and method for repairing pipelines
Patent number
5,035,539
Issue date
Jul 30, 1991
Toa Grout Kogyo Kabushiki Kaishi
Takayuki Kawafuji
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...