ALEXANDRIA, Va., June 18 -- United States Patent no. 12,324,784, issued on June 10, was assigned to HYTTO PTE. LTD. (Singapore).

"Pressure field generator and stimulation device including the same" was invented by Dan Liu (Guangdong, China), Jilin Qiu (Guangdong, China) and Zhiwen Wu (Guandong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device for stimulating an erogenous zone of a human body includes a housing, a driver disposed inside the housing, and a pressure field generator disposed at least partially inside the housing. The pressure field generator includes a continuous cavity having a movable end and a stimulating end opposite thereto, the continuous cavity defined by a tube wall connecti...