ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,294, issued on Sept. 23, was assigned to MTG Co. LTD. (Nagoya, Japan).
"Shower head" was invented by Tsuyoshi Matsushita (Nagoya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A shower head includes a handle and a head portion. The head portion includes shower holes. The handle includes an upstream bubble generator that generates minute bubbles in water. The head portion includes a downstream bubble generator that generates minute bubbles in water in the same manner as the upstream bubble generator. The upstream bubble generator includes a constriction and a tapered portion. The downstream bubble generator has a swirling flow mode. Since min...