ALEXANDRIA, Va., June 6 -- United States Patent no. 12,280,389, issued on April 22, was assigned to Purity (Xiamen) Sanitary Ware Co. LTD (Xiamen, China).

"Microbubble-producing water outlet assembly" was invented by Pawel Xie (Xiamen, China) and Kaiqing Xie (Xiamen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a microbubble-producing water outlet assembly, which includes a housing, a water inflow component, a water through-flow disc and at least three layers of bubble mesh plates. The microbubble-producing water outlet assembly provided by the present invention has a simple structure, is easy to manufacture and easy to implement, has a low cost, and solves a problem t...