US Patent Issued to MITSUBISHI CHEMICAL on Aug. 25 for "Polymer fine particles having structural color development property" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,715,988, issued on Aug. 25, was assigned to MITSUBISHI CHEMICAL Corp. (Tokyo).

"Polymer fine particles having structural color development property" was invented by Shota Nakahara (Tokyo), Masaya Ota (Tokyo), Kousuke Minetaki (Tokyo) and Kenta Yamamoto (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Polymer fine particles having a number average particle diameter of 50 to 450 nm and a CV value of particle diameter on a number basis of 5% or less, or polymer fine particles having a structural color development property when arranged. An acid value of the polymer fine particles is 5 to 38 mg KOH/g. An emulsion in which the polymer fine particles are...