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Hideo Yamamoto
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Takarazuka-shi, JP
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Patents Grants
last 30 patents
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Patent Grant
Threaded joint for steel pipes
Patent number
7,360,798
Issue date
Apr 22, 2008
Sumitomo Metal Industries, Ltd.
Keishi Matsumoto
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Lubricating coating composition suitable for lubrication of a threa...
Patent number
6,869,111
Issue date
Mar 22, 2005
Sumitomo Metal Industries, Ltd.
Kunio Goto
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Method for minimizing surface roughening of tungsten-containing rol...
Patent number
5,409,551
Issue date
Apr 25, 1995
Sumitomo Metal Industries, Ltd.
Shigeki Azuma
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Patents Applications
last 30 patents
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Patent Application
Threaded joint for steel pipes
Publication number
20040239105
Publication date
Dec 2, 2004
Keishi Matsumoto
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Application
Lubricating coating composition suitable for lubrication of a threa...
Publication number
20030111838
Publication date
Jun 19, 2003
Kunio Goto
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...