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. 09, 2024
Filed:
Nov. 19, 2018
Asahi Kasei Kabushiki Kaisha, Tokyo, JP;
Celgard, Llc, Charlotte, NC (US);
Shinya Hamasaki, Tokyo, JP;
Masaki Takahashi, Tokyo, JP;
Shohei Mori, Tokyo, JP;
Yoshiyuki Ishii, Tokyo, JP;
Kenji Ebara, Tokyo, JP;
Changqing Adams, Fort Mill, SC (US);
Asahi Kasei Kabushiki Kaisha, Tokyo, JP;
Celgard, LLC, Charlotte, NC (US);
Abstract
The present invention provides (I) a dry-stretched microporous membrane and a separator for an electric storage device excellent in balance among the required performances such as product safety, charge/discharge characteristics, dimension stability, energy cost, consideration to the environment, etc., (II) a separator for an electric storage device superior in product safety obtained by controlling a puncture depth of a microporous membrane comprised in the separator for an electric storage device, or/and (III) a dry-stretched microporous membrane and a separator for an electric power storage device excellent in product safety realized by controlling a porosity and a puncture strength of a thin microporous membrane.