ALEXANDRIA, Va., July 3 -- United States Patent no. 12,343,689, issued on July 1, was assigned to MURATA MANUFACTURING Co. LTD. (Kyoto, Japan).

"Bubble generating device and bubble generating system" was invented by Katsumi Fujimoto (Nagaokakyo, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A bubble generating device includes a vibration plate, a first cylindrical body, a spring portion, a second cylindrical body, and a piezoelectric element. The vibration plate includes openings, a first surface in contact with a liquid in a liquid tank, and a second surface in contact with a gas. The first cylindrical body has a first end portion supporting the vibration plate. The spring portion has a plate shape a...