ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,545,593, issued on Feb. 10, was assigned to Canon K.K. (Tokyo).

"Method for producing photoresponsive nanoparticle with perovskite-type crystalline structure" was invented by Takayuki Teshima (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing a photoresponsive nanoparticle. The method includes a first step of continuously transporting a first raw material liquid containing a lead halide and a second raw material liquid containing a fatty acid cesium to a heated mixer through a transport path, and a second step of mixing the first raw material liquid and the second raw material liquid."

The patent was filed on Nov. 29...