US Patent Issued to Regeneron Pharmaceuticals on March 4 for "Sustained release formulations using non-aqueous membrane emulsification" (New York Inventors)

ALEXANDRIA, Va., March 5 -- United States Patent no. 12,239,687, issued on March 4, was assigned to Regeneron Pharmaceuticals Inc. (Tarrytown, N.Y.).

"Sustained release formulations using non-aqueous membrane emulsification" was invented by Hunter Chen (New York) and Yiming Zhao (Great Neck, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Non-aqueous membrane emulsion methods for producing polymeric and polymer-coated microparticles are provided. Some embodiments provide methods for producing a sustained release or controlled release microparticle by combining micronized protein powder and a polymer into a hydrocarbon solvent to form a non-aqueous first solution, agitating the first non-aqueous solution ...