US Patent No. 9,808,414 B2 awarded to ELC Management.
US Patent No. 9,808,414 B2; ELC Management LLC, Melville, NY, has patented a method for whitening discrete hyper pigmented spots on skin that entails to the spots a liquid pigmented treatment composition that conatins at least one skin whitening active; a polymeric coating material comprising a composite polymer that is the reaction product of a silanol endblocked polydimethyl siloxane and a silicate resin; a volatile solvent selected from isododecane, isohexadecane, dimethicone, cyclomethicone, and mixtures thereof; a non-volatile silicone oil having a viscosity ranging from 20 to 200,000 cst at room temperature; a silicone surfactant; and titanium dioxide in combination with pigments. The composition, upon exposure to ambient air and moisture in skin, hardens to a water resistant, water vapor permeable, conformable solid film and remains unchanged in adherence to the spots for 24 to 48 hours after application. It is applied to the spots every 12 to 72 hours to color the spots to shade match them to the surrounding untreated skin while whitening the treated spots over time. The pigmentation of the untreated surrounding non-hyperpigmented spots remains unchanged.