ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,055, issued on Dec. 9, was assigned to Kobayashi Pharmaceutical Co. Ltd. (Osaka, Japan).
"Interdental cleaning tool" was invented by Tasuku Kikkawa (Osaka, Japan) and Koki Asayama (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An interdental cleaning tool that achieves both easy insertion between teeth and improved cleaning effect is provided. The interdental cleaning tool 1 includes a base material portion 10 including a base section 11 and a shaft section 12 extending from the base section 11, and a soft portion 20 covering at least a part of the shaft section 12. The at least the part of the shaft section 12 has a first outer dimensi...