ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,649, issued on Oct. 21, was assigned to Trinseo Europe GmbH (Horgen, Switzerland).
"Method and gasket for producing a polymethyl methacrylate plate" was invented by Nikolaj Garnitsch (Horgen, Switzerland) and Simon van der Heijden (Horgen, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing a polymethyl methacrylate plate includes the steps of providing a mould that includes at least one gasket which is enclosed between two substantially parallel mould parts, introducing liquid including methyl methacrylate prepolymer and/or methyl methacrylate monomer in the mould and enabling polymerization of the liquid methyl methac...