ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,493, issued on Oct. 21, was assigned to ETH Zurich (Zurich).
"Solvent free process for manufacturing membranes" was invented by Simon Leu (Buchrain, Switzerland), Wendelin Jan Stark (Langenthal, Switzerland), Anna Margot Beltzung (Zurich, Switzerland), Mario Stucki (Zurich, Switzerland), Olivier Groninger (Baden, Switzerland) and Konstantin Engel (Stuttgart, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to the manufacturing of porous polymer membranes by (a) providing pellets comprising a polymer matrix and particles in the ratio 90:10 to 10:90, (b) converting said pellets into a non-porous film by a solvent-free proce...