ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,410,265, issued on Sept. 9, was assigned to GRST SINGAPORE PTE. LTD. (Singapore).
"Method for polymer precipitation" was invented by Kam Piu Ho (Hong Kong), Yingkai Jiang (Shenzhen, China) and Yangjian Dong (Mianyang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a method for precipitating a polymer by adding a precipitation agent into a first suspension to form a second suspension; wherein the first suspension comprises a polymer and an aqueous solvent; and wherein the polymer comprises a copolymer comprising a structural unit derived from an acid group-containing monomer and a structural unit derived from a hydrophobic group-conta...