ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,329, issued on April 7, was assigned to ZEON Corp. (Tokyo).
"Method for producing hollow resin particles" was invented by Ryo Tsumura (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a method for producing hollow resin particles in which a residual amount of a hydrocarbon solvent once held inside particles in a production process is reduced and particle breakage is suppressed. The method for producing hollow resin particles, which include preparing a mixture liquid containing a polymerizable monomer, a hydrocarbon solvent, a polymerization initiator and an aqueous medium, suspending the mixture liquid to prepare a suspension, subjec...