ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,774,431, issued on Oct. 27, was assigned to FIRMENICH SA (Satigny, Switzerland).
"Freshness imparting compositions" was invented by Etienne Bouckaert (Plainsboro, N.J.), Robert Knab (Plainsboro, N.J.) and Arnaud Struillou (Satigny, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method of conferring, improving, enhancing or modifying the freshness of a perfuming composition, the method comprising the step of adding at least one pro-perfume compound to the perfuming composition. The present invention further concerns a perfumed composition comprising at least one pro-perfume compound and at least one perfumin...