ALEXANDRIA, Va., March 3 -- United States Patent no. 12,564,483, issued on March 3.
"Dental floss holder" was invented by Koujirou Kitahara (Fukuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a dental floss holder in which the type of floss thread and the degree of tension thereof can be easily changed and the workability of the user is good. The dental floss holder includes a rod-like handle portion for a user to grip, a head portion to which a dental floss is locked, and a constricted portion connecting a distal end of the handle portion and the head portion, the constricted portion formed so as to be reduced with respect to a connection part of the handle portion and the head portio...