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:
Mar. 31, 2026
Filed:
Jun. 17, 2021
Arkema France, Colombes, FR;
Fabrice Domingues Dos Santos, Colombes Cedex, FR;
Anthony Bonnet, Colombes Cedex, FR;
ARKEMA FRANCE, Puteaux, FR;
Abstract
A nonwoven web obtained by electrospinning, suitable for the filtration of nano- and/or submicron aerosols, including a multiplicity of fibers of composition C, the composition Cincluding at least 50% by weight of at least one polymer Pbased on the repeat unit resulting from vinylidene fluoride (VDF), the fibers of composition Chaving a degree of crystallinity in polar phase(s), preferentially in solely beta phase, of at least 65% by weight, with respect to their total weight. Also, a process for the manufacture of the web, to a membrane including the web and also to a process for the washing/sterilization of the web or of the membrane.