US6730650B1 - Heavy-duty liquid detergent composition ...
A liquid detergent composition includes an anionic surfactant component, a viscosity-enhancing agent, and a liquid carrier. The liquid detergent composition is substantially free of nonionic surfactant. The anionic surfactant component is present in an amount at least as great as about 2% by weight. The anionic surfactant component is also present in an amount no greater than about 7% by weight.