US Patent Issued to The Coulan on Feb. 3 for "Drop-in recycled refrigerant compositions having no net GWP being a drop-in replacement for R-32 and R-454B" (North Carolina, Ohio Inventors)

ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,265, issued on Feb. 3, was assigned to The Coulan Co. LLC (Clayton, N.C.).

"Drop-in recycled refrigerant compositions having no net GWP being a drop-in replacement for R-32 and R-454B" was invented by David L. Couchot (Mason, Ohio), Abiral Mainali (Raleigh, N.C.), Raymond E. Maloney (Clayton, N.C.) and Harold B. Kivlan IV (Clayton, N.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A refrigerant composition includes about 90-92 wt % difluoromethane and about 8-10 wt % pentafluoroethane. The refrigerant composition is formed from all recycled materials, and the refrigerant composition is a zeotrope. A method of preparing the refrigerant composition i...