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Roughening or texturig surfaces of tubes
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Industry
CPC
B21B2023/005
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Parent Industries
B
PERFORMING OPERATIONS TRANSPORTING
B21
Mechanical metalworking
B21B
ROLLING OF METAL
Current Industry
B21B2023/005
Roughening or texturig surfaces of tubes
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Patents Grants
last 30 patents
Information
Patent Grant
Method for manufacturing seamless steel tube
Patent number
7,201,812
Issue date
Apr 10, 2007
Sumitomo Metal Industries, Ltd.
Hidenori Ogawa
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for producing seamless tube with grooved inner surface
Patent number
6,834,523
Issue date
Dec 28, 2004
Kabushiki Kaisha Kobe Seiko Sho
Nobuaki Hinago
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Method of making machine-engraved seamless tube
Patent number
5,328,587
Issue date
Jul 12, 1994
IR International, Inc.
Willi Fenske
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
Information
Patent Application
Method for manufacturing an aluminum tube
Publication number
20040035176
Publication date
Feb 26, 2004
Jens Haase
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Method for manufacturing seamless steel tube
Publication number
20030196734
Publication date
Oct 23, 2003
Hidenori Ogawa
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Method for producing seamless tube with groved inner surface
Publication number
20030182979
Publication date
Oct 2, 2003
Kabushiki Kaisha Kobe Seiko Sho(Kobe Steel, Ltd.)
Nobuaki Hinago
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Apparatus for producing internally grooved tube
Publication number
20030182980
Publication date
Oct 2, 2003
Kabushiki Kaisha Kobe Seiko Sho(Kobe Steel, Ltd.)
Nobuaki Hinago
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...