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. 07, 2022
Filed:
Jan. 08, 2020
Applicant:
Samsung Sdi Co., Ltd., Yongin-si, KR;
Inventors:
Assignee:
Samsung SDI Co., Ltd., Yongin-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 50/431 (2021.01); H01M 10/0525 (2010.01); H01M 10/0565 (2010.01); H01M 50/403 (2021.01);
U.S. Cl.
CPC ...
H01M 50/431 (2021.01); H01M 10/0525 (2013.01); H01M 10/0565 (2013.01); H01M 50/403 (2021.01);
Abstract
A separator for a rechargeable battery includes a porous substrate, and a coating layer including a plurality of annular patterns on at least one surface of the porous substrate. The annular patterns may include a plurality of polymer microparticles, the annular patterns may have an average particle diameter (D50) of about 50 μm to about 500 μm, and rings of the annular patterns may have a ring width of about 5 μm to about 50 μm.