US Patent Issued to Ricoh on Aug. 4 for "Curable composition, three-dimensional object producing method, three-dimensional object producing apparatus, and artificial tooth object" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,402, issued on Aug. 4, was assigned to Ricoh Co. Ltd. (Tokyo).

"Curable composition, three-dimensional object producing method, three-dimensional object producing apparatus, and artificial tooth object" was invented by Hiroyuki Naito (Tokyo), Yuki Shingai (Kanagawa, Japan) and Noriaki Okada (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A curable composition containing a radical-polymerizable monomer and a hard solid component having a volume average particle diameter of 10 nm or greater and 1,000 nm or less is provided. The content of the hard solid component is 3% by volume or greater and 40% by volume or less. The difference (n1-n...