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:
Apr. 02, 2019
Filed:
Dec. 25, 2009
Applicants:
Takashi Ikemoto, Tokyo, JP;
Yoshihiro Imamura, Tokyo, JP;
Inventors:
Takashi Ikemoto, Tokyo, JP;
Yoshihiro Imamura, Tokyo, JP;
Assignee:
ASAHI KASEI E-MATERIALS CORPORATION, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); C08J 5/18 (2006.01); H01M 2/14 (2006.01); B29C 55/16 (2006.01);
U.S. Cl.
CPC ...
C08J 5/18 (2013.01); H01M 2/145 (2013.01); H01M 2/1653 (2013.01); B29C 55/16 (2013.01); C08J 2323/02 (2013.01);
Abstract
There is provided a polyolefin microporous film which is excellent in taking-up stability in a production line and a processing line of the polyolefin microporous film, and further in a line for a battery taking-up step, and hardly generates step deviation when a roll thereof has received an impact. The polyolefin microporous film has a compression elastic modulus of 0.1 to 1,000 kPa, and a ratio of a tensile elastic modulus in the longitudinal direction to a tensile elastic modulus in the transverse direction of 1.5 to 7.8.