Patents by Inventor Katsuji Eimura

Katsuji Eimura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Metal mold for a connected product and method of molding the product
    Patent number: 7320768
    Abstract: An object of the present invention is to provide a metal mold of a simple structure that can be used for injection molding a combined product composed of some molded pieces regardless of the accuracy and the shape of a desired combined product and a method of molding such combined product. A metal mold M for injection molding comprises a first piece mold 5 for molding a first molded piece 2, a second piece mold 4 for molding a second molded piece 6, and a pin core 8 for forming an insertion hole 1. A method of injection molding a combined product P comprises the steps of injection molding the first molded piece 2 from a first plastic resin A, removing the pin core 8 that is used for forming the insertion hole 1 in the first molded piece 2 in the former step from the first molded piece 2, and injection molding the second molded piece 4 from a second plastic resin B.
    Type: Grant
    Filed: July 6, 2003
    Date of Patent: January 22, 2008
    Assignees: Mishima Giken Co., Ltd., Kakuichikasei Co., Ltd.
    Inventor: Katsuji Eimura
  • Metal mold for a connected product and method of molding the product
    Publication number: 20050012240
    Abstract: An object of the present invention is to provide a metal mold of a simple structure that can be used for injection molding a combined product composed of some molded pieces regardless of the accuracy and the shape of a desired combined product and a method of molding such combined product. A metal mold M for injection molding comprises a first piece mold 5 for molding a first molded piece 2, a second piece mold 4 for molding a second molded piece 6, and a pin core 8 for forming an insertion hole 1. A method of injection molding a combined product P comprises the steps of injection molding the first molded piece 2 from a first plastic resin A, removing the pin core 8 that is used for forming the insertion hole 1 in the first molded piece 2 in the former step from the first molded piece 2, and injection molding the second molded piece 4 from a second plastic resin B.
    Type: Application
    Filed: July 6, 2003
    Publication date: January 20, 2005
    Inventor: Katsuji Eimura