ALEXANDRIA, Va., April 15 -- United States Patent no. 12,599,536, issued on April 14, was assigned to HYTTO PTE. LTD. (Singapore).
"Adult toy" was invented by Dan Liu (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An adult toy includes a substantially hollow cylindrical body and a vagina-shaped element arranged inside the substantially hollow cylindrical body. The vagina-shaped element includes an opening at a first end of the substantially hollow cylindrical body to receive a male genital organ therein. The adult toy includes a chamber arranged between the substantially hollow cylindrical body and the vagina-shaped element, with the chamber surrounding the vagina-shaped element, and furthe...