Antifouling paint patentIn 1625, the first patent for antifouling paint was issued in Britain to William Beale (No. 32/1625). He used a mixture of cement, copper compound, and powdered iron that was intended to impair marine growth of the boreworm on a ship's hull. The first U.S. patent for a paint against fouling by shells and weeds was issued on 3 Nov 1863 to James G. Tarr and Augustus H.Wonson of Gloucester, Mass. (3 Nov 1863 No. 40515) which used copper oxide powdered from ore in Stockholm tar, and naptha or benzine. The first patent under Japan's Patent Monopoly Act was for an antifouling paint, was issued 14 Aug 1885 to Zuisho Hotta for a formula combining lacquer, powdered iron, red lead, persimmon tannin, and other ingredients.«* |
