11.11.05
Patent No. US 6,444,635 B1: Colgate-Palmolive patented a microemulsion cleaner with anionic sulfated and sulfonated surfactants; short chain amphiphiles; a fatty acid; magnesium sulfate; a water-insoluble hydrocarbon, essential oil or perfume; a preservative; an amino disuccinate-sodium salt pre-servative potentiator and water.