ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,200, issued on Nov. 3, was assigned to DSM IP ASSETS B.V. (Heerlen, Netherlands).

"Retinoid production" was invented by Valmik Kanubhai Vyas (Winchester, Mass.), Peter Louis Houston (Boston), Jenna McMahon (Tewksbury, Mass.) and Rene Marcel De Jong (Amsterdam).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is related to bio-production of retinoids with improved purity profile, particularly bio-retinoids with a high percentage of retinyl acetate, wherein the flux towards retinol is increased and wherein the percentage of unwanted by-products such as dihydroretinoids or retinal is minimized to a range of below 10% by expressing ret...