1. Ozark (1949) US 2 481 807 USA‐prior.1947.
2. Ozark (1969) US 3 463 605 USA‐prior.1966.
3. Use in Dentifrice Preparations: Colgate‐Palmolive (1966) US 3 227 617 USA‐prior.1954.
4. GABA (1963) US 3 083 143 CH‐prior.1957.
5. Toothpaste Preparation: Colgate‐Palmolive (1979) US 4 160 022 USA‐prior.1972.