ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,433, issued on Sept. 9, was assigned to Symrise AG (Holzminden, Germany).
"Microcapsules" was invented by Benjamin Rost (Bodenwerder, Germany), Ralf Bertram (Holzminden, Germany), Daniela Gregor (Holzminden, Germany) and Lara-Joy Kleine-Benne (Holzminden, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "What are proposed are microcapsules comprising (a) a core comprising at least one active, and (b) a capsule wall,wherein the capsule wall consists of at least three polymer layers and at least one of the polymer layers consists of a first phenolic resin, wherein the first phenolic resin comprises 3% to 50% by weight of moieties that derive fro...