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:
Feb. 24, 2026
Filed:
Sep. 07, 2018
3m Innovative Properties Company, St. Paul, MN (US);
Zhou Jin, Shanghai, CN;
Pingfan Wu, Woodbury, MN (US);
Tatjana Stecenko, Toronto, CA;
Shailendra Bhogilal Rathod, St. Paul, MN (US);
Anne Nathalie De Rovere, Woodbury, MN (US);
Bhaskara Rao Boddakayala, Troy, MI (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A fire protection article is provided that includes a fire barrier comprising a plurality of non-combustible fibers, and a passive thermal insulator coupled to the fire barrier and comprising a plurality of non-meltable fibers. Optionally, the fire protection article displays a time to break in the 1100° C. Break Strength Test of at least 10 seconds or a minimum tensile strength at 150° C. of at least 5 kPa. Optionally, the fire barrier comprises substantially continuous fibers that are mutually entangled. The fire barrier and passive thermal insulator can be mutually secured using a suitable polymeric binder, such a thermoplastic fluoropolymer binder. The combination of a relatively thin fire barrier with a comparatively thicker passive thermal insulator can provide thermal runaway protection in lithium-ion battery applications, structural integrity and a high degree of thermal insulation in the event of fire exposure.