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Hitoshi Saito
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Osaka, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Duct repairing material, repairing structure, and repairing method
Patent number
6,796,334
Issue date
Sep 28, 2004
Ashimori Industry Co., Ltd.
Masatoshi Ishikawa
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Lining material for pipelines and method for manufacturing the same
Patent number
5,885,674
Issue date
Mar 23, 1999
Ashimori Industry Co., Ltd.
Yukikazu Maemoto
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Pipeline structure with a lining material, an end structure of said...
Patent number
5,857,494
Issue date
Jan 12, 1999
Tokyo Gas Kabushiki Kaisha
Katsuyoshi Tsukamoto
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Repairing tube, method for repairing pipe lines therewith and metho...
Patent number
5,671,778
Issue date
Sep 30, 1997
Ashimori Kogyo Kabushiki Kaisha
Hiroyuki Sakuragi
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Lining material for pipelines
Patent number
5,164,237
Issue date
Nov 17, 1992
Tokyo Gas Kabushiki Kaisha
Shigeo Kaneda
B32 - LAYERED PRODUCTS
Information
Patent Grant
Lining material for pipelines
Patent number
5,077,107
Issue date
Dec 31, 1991
Tokyo Gas Kabushiki Kaisha
Shigeo Kaneda
B32 - LAYERED PRODUCTS
Information
Patent Grant
Lining material for pipe lines
Patent number
4,877,665
Issue date
Oct 31, 1989
Tokyo Gas Kabushiki Kaisha
Kumao Higuchi
D03 - WEAVING
Patents Applications
last 30 patents
Information
Patent Application
Duct repairing material, repairing structure, and repairing method
Publication number
20030116210
Publication date
Jun 26, 2003
Masatoshi Ishikawa
E21 - EARTH DRILLING MINING