US Patent Issued to WEISHANG (SHANGHAI) BIO-PHARMACEUTICAL on July 29 for "Quinazoline derivative salt crystal form, preparation method and application" (Chinese Inventors)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,415, issued on July 29, was assigned to WEISHANG (SHANGHAI) BIO-PHARMACEUTICAL Co. LTD. (Shanghai).

"Quinazoline derivative salt crystal form, preparation method and application" was invented by Wei Zhong (Shanghai) and Jinqiang Zhang (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A quinazoline derivative (represented by the formula (I)) salt's crystal form, a preparation method and application are provided; specifically, the hydrochloride crystal form A, B, C, D, F, H, I, Sulphate crystal form A, Maleate crystal form A, Succinate crystal form A, Adipate crystal form A, Glycolate crystal form A, Malate crystal form A, Fumarate Salt crystal...