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. 25, 2021
Filed:
Jan. 17, 2017
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Masayuki Matsuyama, Fukuoka, JP;
Akinori Kumagai, Fukuoka, JP;
Abstract
A polishing slurry according to the present invention contains: abrasive grains made of a metal oxide; a permanganate; and an inorganic compound other than the permanganate. The inorganic compound is such that a solution that is obtained by adding the inorganic compound to a 1.0 mass % aqueous solution of the permanganate so that the inorganic compound accounts for 1.0 mass % of the resultant aqueous solution has an oxidation-reduction potential higher than that of the 1.0 mass % aqueous solution of the permanganate. It is preferable that the inorganic compound be contained in an amount of 0.7 parts by mass or more and 150 parts by mass or less relative to 100 parts by mass of the permanganate. It is also preferable that the abrasive grains made of a metal oxide be manganese oxide particles.