US Patent Issued to Amrize Technology Switzerland on Sept. 8 for "Process for producing isocyanate-based foam construction boards" (Indiana Inventors)

ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,278, issued on Sept. 8, was assigned to Amrize Technology Switzerland LLC (Zug, Switzerland).

"Process for producing isocyanate-based foam construction boards" was invented by John Letts (Carmel, Ind.), Chunhua Yao (Carmel, Ind.) and Michael Hubbard (Goshen, Ind.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process for producing a polyurethane or polyisocyanurate construction board, the process comprising (i) providing an A-side reactant stream that includes an isocyanate-containing compound; (ii) providing a B-side reactant stream that includes a polyol, where the B-side reactant stream includes a blowing agent that includes a pentane and a blo...