ALEXANDRIA, Va., June 10 -- United States Patent no. 12,290,786, issued on May 6, was assigned to ENTEGRIS INC. (Billerica, Mass.).
"Composite nanoporous metal membrane" was invented by Robert Zeller (Boston).
According to the abstract* released by the U.S. Patent & Trademark Office: "A composite nanoporous metal membrane, a method of making same, and a method of using same to filter supercritical CO2 are provided. The method of making generally includes a) providing a sintered coarse porous layer; b) applying to an outer face of the coarse porous layer second metal particles; c) sintering to form a structure comprising coarse and intermediate layers; d) applying a suspension of third metal particles; e) drying the suspension of third par...