ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,485,441, issued on Dec. 2, was assigned to Guangzhou Shanggong Plastic Co. Ltd (Guangzhou, China).

"Single material all plastic lotion pump and storage bottle of application thereof" was invented by Qi Quan Liang (Guangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure provides a single material all plastic lotion pump and a storage bottle of application thereof, and the pump includes a plastic pump casing, a plastic pressing head, a plastic cylinder casing and a plastic double piston mechanism; the plastic pump casing is provided with a material delivery tube that communicates between the inside and outside; and the overall materi...