ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,095, issued on Sept. 9, was assigned to BIBOTING INTERNATIONAL Co. LTD. (Taoyuan, Taiwan).

"Female-specific negative pressure massage device and massage structure thereof" was invented by Po-Chang Liu (Taoyuan, Taiwan) and Li-Pin Yuan (Taoyuan, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A female-specific massage structure includes a cup body and a sheath ring. The cup body has a cavity, and two ends of the cup body are an open end and a closed end respectively, and a cup rim is formed at the open end, and a connection hole is formed at the closed end and communicates with the cavity. The sheath ring includes a ring body and a fixing port...