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Yukio Ito
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Yokkaichi, JP
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last 30 patents
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Patent Grant
Corrosion-resistant spring steel
Patent number
5,643,532
Issue date
Jul 1, 1997
Daido Tokushuko Kabushiki Kaisha
Yukio Ito
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Forging lubricant and a method for forming a lubricant coat on the...
Patent number
5,244,587
Issue date
Sep 14, 1993
Daido Machinery, Ltd.
Yukio Ito
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Method for forming a lubricant coat on the surface of a material to...
Patent number
5,081,858
Issue date
Jan 21, 1992
Daido Tokushuko Kabushiki Kaisha
Yukio Ito
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Process for producing steel for valve springs
Patent number
4,810,287
Issue date
Mar 7, 1989
Daido Tokushuko Kabushiki Kaisha
Tsutomu Saka
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
High-strength steel for valve springs, process for producing the st...
Patent number
4,795,609
Issue date
Jan 3, 1989
Daido Tokushuko Kabushiki Kaisha
Tsutomu Saka
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...