US Patent Issued to ARKEMA FRANCE on March 31 for "Electrostatically charged porous nonwoven web, membrane and mask derived therefrom and methods for manufacture and cleaning" (French Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,364, issued on March 31, was assigned to ARKEMA FRANCE (Puteaux, France).

"Electrostatically charged porous nonwoven web, membrane and mask derived therefrom and methods for manufacture and cleaning" was invented by Fabrice Domingues Dos Santos (Colombes Cedex, France) and Anthony Bonnet (Colombes Cedex, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A nonwoven web obtained by electrospinning, suitable for the filtration of nano- and/or submicron aerosols, including a multiplicity of fibers of composition C1, the composition C1 including at least 50% by weight of at least one polymer P1 based on the repeat unit resulting from vinylidene fluo...