Patents Represented by Law Firm Olbon, Fisher, Spivak, McClelland & Maier, P.C.
  • Light curing compositions for dental restoration
    Patent number: 4804690
    Abstract: A light curing composition for dental restoration comprises (a) a polymerizable compound containing at least one ethylenically unsaturated double-bond, (b) at least one photo-polymerization initiator selected from ketal base compound as defined herein, (c) at least one photo-polymerization initiator selected from anthraquinone base compounds as defined herein, (d) a reducing agent and (e) a filler.
    Type: Grant
    Filed: September 11, 1986
    Date of Patent: February 14, 1989
    Assignee: G-C Dental Industrial Corporation
    Inventors: Takao Kubota, Tetsuro Sakuma, Ryoji Nakazato