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Yutaka Kato
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Ibaraki, JP
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last 30 patents
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Patent Grant
Process for preparing hollow aluminum extrudates for use in vacuum
Patent number
4,860,565
Issue date
Aug 29, 1989
Showa Aluminum Corporation
Yutaka Kato
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Process for producing hollow extrudate for use in vacuum
Patent number
4,828,937
Issue date
May 9, 1989
Showa Aluminum Corporation
Yutaka Kato
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Process for producing aluminum material for use in vacuum
Patent number
4,615,747
Issue date
Oct 7, 1986
Showa Aluminum Corporation
Yutaka Kato
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...