ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,485,399, issued on Dec. 2, was assigned to ZEON Corp. (Tokyo).
"Hollow particles, resin composition and molded body" was invented by Masashi Watanabe (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are hollow particles which have a high void ratio, hardly collapse, and have a reduced amount of volatile compounds. The hollow particles comprising a shell and a hollow portion surrounded by the shell, and having a void ratio of 50% or more and 90% or less, wherein the shell has a thickness of 0.2 micro metre or more and 0.9 micro metre or less, and the shell contains a polymer derived from a polymerizable monomer for shell, which is composed o...