US Patent Issued to The Lubrizol on May 19 for "Lubricants for use in vapor-compression systems" (Michigan, Ohio Inventors)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,630,780, issued on May 19, was assigned to The Lubrizol Corp. (Wickliffe, Ohio).

"Lubricants for use in vapor-compression systems" was invented by David M. Pallister (Highland, Mich.), Eric Schweim (Rochester Hills, Mich.), Scott Miller (Midland, Mich.), Kyle Stevens (Midland, Mich.) and Arthur L. Backman (Broadview Heights, Ohio).

According to the abstract* released by the U.S. Patent & Trademark Office: "Lubricant compositions comprising an oil of lubricating viscosity and a viscosity modifier that is a hydrocarbon polymer having a number average molecular weight (Mn) of less than 10,000 Daltons (Da). The viscosity modifier is present at greater than 2 wt %, based on a total weight ...