ALEXANDRIA, Va., July 16 -- United States Patent no. 12,361,842, issued on July 15, was assigned to Philip Morris Products S.A. (Neuchatel, Switzerland).
"Perforated structure" was invented by Pierre Herve (Daillens, Switzerland), Shoaib Majeed (Neuchatel, Switzerland), Antonin Sandoz (Geneva) and Sandro Steiner (Arch, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is described herein a perforated structure for use in a simulated respiratory tract, the structure comprising a perforated envelope housing one or more branched channels, wherein each perforation is an open terminal of a branch. Also described is a pump for displacing a volume of gas that includes one or more branched channels, s...