ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,113, issued on March 25, was assigned to Fresh Health Inc. (Mountain View, Calif.).

"Systems and methods for personalized oral irrigation" was invented by Michael Lee Hanuschik (Mountain View, Calif.), Bruce Michael Schena (Menlo Park, Calif.), Gerald Thomas Ryle (San Francisco), Angela Junyan Chu (San Francisco), Kristina Jenna Cook (San Francisco) and Kyle Geoffrey Mooney (San Francisco).

According to the abstract* released by the U.S. Patent & Trademark Office: "Described herein are systems and methods for providing personalized oral irrigation. One variation of a system for personalized oral irrigation comprises a fluid reservoir and a customized oral insert in fluid communi...