Patent No. US 7,361,361 B2: Georgia-Pacific has patented a wet-laid cellulosic tissue that contains a microemulsion composition comprising an antiviral compound. The microemulsion composition is liquid at room temperature and undergoes a phase change to a semi-solid or solid upon contact with the wet-laid cellulosic tissue. The antiviral compound may contain bioflavonoids, dicarboxylic acids, alpha hydroxy carboxylic acids, neem seed oil, sandalwood oil, protease inhibitors and their mixtures....