ALEXANDRIA, Va., June 2 -- United States Patent no. 12,642,865, issued on June 2, was assigned to China Medical University (Taichung City, Taiwan).

"Toroidal mixed nanoparticle, method for preparing the same, and method for multifunctional delivery using the same" was invented by Yi-Ting Chiang (Taichung City, Taiwan), Hui-Chang Lin (Taichung City, Taiwan) and Guan-Jhong Huang (Taichung City, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a toroidal mixed nanoparticle including a first polymer and a second polymer interacting with the first polymer. Also provided is a method for preparing the toroidal mixed nanoparticle, including mixing the first polymer and the second polymer having clea...