ALEXANDRIA, Va., May 26 -- United States Patent no. 12,637,261, issued on May 26, was assigned to Zhejiang Ansheng Science & Technology Stock Co. Ltd. (Yongkang, China).
"Leak-proof straw cup" was invented by Haofeng Wang (Jinhua, China), Xiaohui Tang (Jinhua, China), Haiyang Wu (Jinhua, China) and Jing Sun (Jinhua, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The application discloses a leak-proof straw cup and relates to the field of cups. The leak-proof straw cup comprises a receiving portion for receiving liquid; a sealing portion detachably connected to the receiving portion and used for sealing the receiving portion; a circulation hole formed in the sealing portion and connecting two sides of t...