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. 05, 2013
Filed:
Mar. 21, 2011
Toshiya Yamamoto, Tsukuba, JP;
Takanobu Miyashita, Tsukuba, JP;
Kiyoshi Higuchi, Tsukuba, JP;
Yasuyuki Goto, Tsukuba, JP;
Toshiya Yamamoto, Tsukuba, JP;
Takanobu Miyashita, Tsukuba, JP;
Kiyoshi Higuchi, Tsukuba, JP;
Yasuyuki Goto, Tsukuba, JP;
Tanaka Kikinzoku Kogyo K.K., Tokyo, JP;
Abstract
A target consisting essentially of a CoCrPt-based metal or a CoCrPtRu-based metal, and one or more metal oxides selected from the group consisting of SiO, CrO, CoO, TiOand TaO, is heated in an upper crucible of a two-level crucible that includes the upper crucible with a through hole formed in a bottom surface, and a lower crucible disposed below the through hole. The target is heated at a temperature of from 1400 to 1790° C. if the target does not contain both TiOand TaO. The target is heated at a temperature of from 1400 to 1630° C. if the target contains TiObut does not contain TaO. The target is heated at a temperature of from 1400 to 1460° C. if the target contains TaO. The metal thereby melted is caused to flow into the lower crucible, so that the metal is separated from the metal oxide.