ALEXANDRIA, Va., June 19 -- United States Patent no. 12,329,263, issued on June 17, was assigned to PPK (SHANGHAI) PACKAGING Co. LTD. (Shanghai).
"Roll-on packaging bottle" was invented by Helin Zhou (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid cosmetic container is provided. A roll-on packaging bottle includes an outer bottle, a cap, a roller ball, a connector, and an inner bottle, where the roller ball is provided in the connector; an inner ring of the cap is provided with a limit member; the connector includes a connecting seat, a limit ring, and a roller ball cavity; a diameter of an inner cavity of a barrel matches with an outer diameter of the roller ball; the roller ball is provid...