ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,453,949, issued on Oct. 28, was assigned to PETROGAL S.A. (Alcantara, Portugal).

"Closure plate for preloading a plate reactor, plate reactor and manufacturing method thereof" was invented by Joaquim Antonio Conde Correia Dos Santos (Oporto, Portugal), Jose Carlos Brito Lopes (Oporto, Portugal) and Fernando Gomes De Almeida (Vila Nova de Gaia, Portugal).

According to the abstract* released by the U.S. Patent & Trademark Office: "Closure plate for preloading a plate reactor comprising a stack of plates for planar flow of fluid or fluids, said flow being bounded by said plates, wherein said plates have a given width and a given length, wherein the closure plate comprises a sheet with a...