ALEXANDRIA, Va., July 16 -- United States Patent no. 12,357,544, issued on July 15, was assigned to TOKUYAMA DENTAL Corp. (Tokyo).
"Curable composition for dentistry" was invented by Hiroshi Morisaki (Tokyo), Tatsuya Yamazaki (Tokyo), Takuma Matsuo (Tokyo) and Hironobu Akizumi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a curable composition that is for dentistry and that contains: a polymerizable monomer (A); an inorganic filler (B) having an average particle size of 0.1-1 micro metre; an organic-inorganic composite filler (C) having an aggregate structure in which inorganic primary particles having an average particle size of 10-1000 nm are bonded together through a resin layer coveri...