The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 14, 1984
Filed:
Jan. 28, 1981
Applicant:
Inventors:
Kohzoh Hoshino, Mooka, JP;
Muneo Mizuno, Mooka, JP;
Hiroshi Murakado, Mooka, JP;
Yoshinobu Kitao, Mooka, JP;
Assignee:
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Primary Examiner:
Int. Cl.
CPC ...
C22F / ;
U.S. Cl.
CPC ...
148-2 ; 148 / ; 148 315 ;
Abstract
A method for producing Al-base alloy substrates for magnetic discs, which comprises continuously casting into a strip of a thickness of 4 to 15 mm a molten alloy composition containing alloy components consisting of 2-6% of Mg, less than 1% of Mn, less than 0.3% of Fe, less than 0.25% of Zn and less than 0.35% of Cr and a grain refiner comprising less than 0.08% of Ti and/or less than 0.01% of B, followed by rolling.