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:
Jun. 25, 2019
Filed:
Nov. 12, 2015
Applicant:
Kuraray Co., Ltd., Kurashiki-shi, JP;
Inventors:
Kiyofumi Kadowaki, Kurashiki, JP;
Shinya Kato, Kurashiki, JP;
Chihiro Okamoto, Kurashiki, JP;
Mitsuru Kato, Kurashiki, JP;
Minori Takegoshi, Kurashiki, JP;
Assignee:
KURARAY CO., LTD., Kurashiki-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
B24B 37/24 (2012.01); H01L 21/304 (2006.01); B24B 37/26 (2012.01);
U.S. Cl.
CPC ...
B24B 37/24 (2013.01); B24B 37/26 (2013.01); H01L 21/304 (2013.01);
Abstract
Disclosed is a polishing-layer molded body including: a thermoplastic polyurethane that is a polymer of a monomer including: a polymer diol; an organic diisocyanate; a first chain extender including a diol having 4 or less carbon atoms; a second chain extender including a diol having 5 or more carbon atoms, a content ratio of nitrogen derived from an isocyanate group of the organic diisocyanate being 6.3 to 7.4 mass %, and the polishing-layer molded body being non-porous.