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. 15, 2023
Filed:
Mar. 27, 2020
Applicant:
Ube Corporation, Ube, JP;
Inventors:
Takanobu Mimura, Sakai, JP;
Ryou Sakimoto, Sakai, JP;
Assignee:
UBE CORPORATION, Ube, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 50/417 (2021.01); H01G 11/52 (2013.01); H01M 10/0525 (2010.01); H01M 50/449 (2021.01); H01M 50/489 (2021.01); H01M 50/411 (2021.01);
U.S. Cl.
CPC ...
H01G 11/52 (2013.01); H01M 10/0525 (2013.01); H01M 50/411 (2021.01); H01M 50/417 (2021.01); H01M 50/449 (2021.01); H01M 50/489 (2021.01);
Abstract
A polyolefin porous film is provided, the film comprising a polyethylene-based resin, wherein a weight average molecular weight of the polyethylene-based resin is 450,000 or less, and a content of a high molecular weight component having a molecular weight of 1,000,000 or more in the polyethylene-based resin is 2 to 11% by mass.