Patents by Inventor Yuji Kamegai

Yuji Kamegai 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).

  • Multi-layer parison, multi-layer bottle and apparatus for and method of manufacturing parison and bottle
    Patent number: 5035931
    Abstract: Each of a multi-layer parison and a bottle formed from the parison has a nine-layer structure including five heat resistant resin layers at their mouth portions. The parison is formed by a hot runner nozzle capable of polyester resin and heat resistant resin at the same time. The bottle is formed by a stretching blow molding apparatus in which the parison is set, the apparatus having a passage for heated and compressed air and a passage for cooling fluid.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: July 30, 1991
    Assignee: Dai Nippon Insatsu K.K.
    Inventors: Tsutoo Yamada, Kenichi Morizumi, Yuji Kamegai, Yasushi Kanno, Takemi Shibuya