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:
Aug. 28, 2018
Filed:
Jan. 20, 2015
Fujimi Incorporated, Kiyosu-shi, Aichi, JP;
Akihito Yasui, Kiyosu, JP;
FUJIMI INCORPORATED, Kiyosu-Shi, JP;
Abstract
The present invention relates to a polishing composition used in application in which a polishing object having a cobalt element-containing layer is polished, including: a cobalt dissolution inhibitor; and a pH adjusting agent, wherein the polishing composition has a pH of 4 or more and 12 or less, and the cobalt dissolution inhibitor is at least one member selected from the group consisting of an organic compound having an ether bond, an organic compound having a hydroxyl group, an organic compound having a carboxyl group and having a molecular weight of 130 or more, and salts thereof. According to the present invention, there is provided a polishing composition capable of suppressing the dissolution of a cobalt element-containing layer when a polishing object having a cobalt element-containing layer is polished.