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:
May. 07, 2019
Filed:
Mar. 29, 2016
Applicant:
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01F 17/00 (2006.01); C01F 11/22 (2006.01); C01B 11/24 (2006.01); C04B 35/553 (2006.01);
U.S. Cl.
CPC ...
C01F 17/00 (2013.01); C01B 11/24 (2013.01); C01F 11/22 (2013.01); C04B 35/553 (2013.01); C01P 2002/30 (2013.01); C01P 2002/72 (2013.01); C01P 2002/88 (2013.01); C01P 2004/51 (2013.01); C01P 2004/61 (2013.01); C04B 2235/3203 (2013.01); C04B 2235/3208 (2013.01); C04B 2235/3225 (2013.01); C04B 2235/3895 (2013.01); C04B 2235/5436 (2013.01); C04B 2235/604 (2013.01); C04B 2235/661 (2013.01); C04B 2235/762 (2013.01); C04B 2235/80 (2013.01); C04B 2235/81 (2013.01);
Abstract
An yttrium oxyfluoride is represented by YOF and is stabilized by a fluoride represented by CaF. Preferably, the number of moles of Ca with respect to 100 mol of yttrium is from 8 to 40 mol. A powder material is made of a first powder mixture including a calcium fluoride powder represented by CaFand an yttrium oxyfluoride powder represented by YOF, or a second powder mixture including a calcium fluoride powder represented by CaF, an yttrium fluoride powder represented by YF, and an yttrium oxide powder represented by YO. A production method involves firing a molded product of the first or second powder mixture under predetermined conditions.