Patents Assigned to Osaka City & Taiyo Manufacturing Works Co., Ltd.
  • Insulated metal mold
    Patent number: 4225109
    Abstract: An insulated metal mold having a molding surface defining the cavity of a mold for molding thermoplastic resin. To regulate the cooling speed of the molten resin to be injected or placed into the cavity, the molding surface is provided by a thin metal layer and a layer of heat insulating material is formed on the inner side of the metal layer.
    Type: Grant
    Filed: July 6, 1978
    Date of Patent: September 30, 1980
    Assignee: Osaka City & Taiyo Manufacturing Works Co., Ltd.
    Inventors: Akira Yotsutsuji, Seiichi Ueda, Hiroyuki Iwami