ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,127, issued on Sept. 9, was assigned to The Procter & Gamble Co. (Cincinnati).

"Leave-on oral care compositions" was invented by Ross Strand (Singapore), Yang Su (Beijing), Yunming Shi (Beijing), Thanigaivel Shanmugam (Beijing), Xiaowei Li (Beijing) and Guannan Wang (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "Leave-on oral care compositions including a hyaluronic acid or a salt thereof good spreadability and improved retention period are provided for promoting Gum Health of a user. Kits and methods are also provided."

The patent was filed on Dec. 20, 2023, under Application No. 18/390,158.

*For further information, including images, c...