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:
Sep. 05, 1995
Filed:
Dec. 09, 1993
Kaoru Masuda, Yasugi, JP;
Shunichiro Matsumoto, Fremont, CA (US);
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A target for magneto-optical recording media having a microstructure having a matrix phase of a eutectic structure of a rare earth metal and an iron-group metal, particles I made of a pure iron-group metal or an alloy thereof and having an average diameter of 200 .mu.m or less and particles II made of a corrosion resistance-improving metal and an iron-group metal and having an average diameter of 200 .mu.m or less is produced by mixing rapidly-quenched powder A made of the rare earth metal and the iron-group metal and having a eutectic structure with powder B made of a pure iron-group metal or an alloy thereof and having an average diameter of 200 .mu.m or less, and powder C made of the corrosion resistance-improving metal and the iron-group metal and having an average diameter of 200 .mu.m or less, and pressure-sintering the resulting mixed powder at a temperature lower than a liquid phase-appearing temperature.