US Patent Issued to Refined Technologies on April 14 for "Compositions and methods for removal of n-methyl-2-pyrrolidone (NMP) degradation products and other foulants from NMP purification systems" (Texas, California Inventors)

ALEXANDRIA, Va., April 15 -- United States Patent no. 12,600,697, issued on April 14, was assigned to Refined Technologies Inc. (Spring, Texas).

"Compositions and methods for removal of n-methyl-2-pyrrolidone (NMP) degradation products and other foulants from NMP purification systems" was invented by Jerrod Overholt (San Pedro, Calif.) and Sean E. Sears (The Woodlands, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods of cleaning an N-methyl-2-pyrrolidone (NMP) purification and recovery system having an NMP-containing chemical waste stream, a separation tower fluidically coupled with the chemical waste stream, a reflux drum fluidically coupled with an upper section of the separation tower, a reboi...