ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,458,570, issued on Nov. 4, was assigned to The Procter & Gamble Co. (Cincinnati).

"Semisolid oral dispersions comprising active agents" was invented by Paul Albert Sagel (Mainville, Ohio), Jayanth Rajaiah (Loveland, Ohio) and Michael David Curtis (Mason, Ohio).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for whitening teeth is provided where the method includes contacting at least one tooth surface with a semisolid oral dispersion. The semisolid oral dispersion may include solid hydrophilic active agent particles, where at least about 20 parts, by weight, of the solid hydrophilic active agent particles are soluble in about 100 parts, by weight,...