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:
Nov. 03, 2026
Filed:
Jul. 28, 2023
Ningde Amperex Technology Limited, Ningde City, CN;
Long Zhang, Ningde City, CN;
Dongyang Guo, Ningde City, CN;
NINGDE AMPEREX TECHNOLOGY LIMITED, Ningde City, CN;
Abstract
A layered porous film includes a substrate film and a polymer coating provided on at least one side of the substrate film. The substrate film and the polymer coating satisfy both formula I and formula II: 0≤(Tm−Tm)/M≤0.0005, formula I, and 0≤(Tm−Tm)/M≤0.05, formula II; where Tmis a melting point of the substrate film, and Mis a weight-average molecular weight of a polymer contained in the substrate film; and Tmis a melting point of the polymer coating, and Mis a weight-average molecular weight of a polymer contained in the polymer coating. The layered porous film has advantages of low pore-closing temperature and high inflection resistance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile