Patents by Inventor Kinshiro Kojima

Kinshiro Kojima 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).

  • Method for disposing inner insert in blow molding
    Patent number: 4719072
    Abstract: In disposing an insert or inserts within a blow-molded product, before the blow molding step is started, an inner supporting device supporting the insert at an end thereof is inserted into a parison and then the mold is closed so that the insert is made into contact with the parison. Thereafter the blow molding is effected so that the insert is securely welded to the parison.
    Type: Grant
    Filed: April 23, 1986
    Date of Patent: January 12, 1988
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Kinshiro Kojima, Akira Iwawaki, Yoshiharu Shitara
  • Extrusion head for use in blow molding machine
    Patent number: 4422838
    Abstract: An extrusion head for use in blow molding machines for molding parison having a single layer or wall or a plurality of layers or walls, in which a plunger is slidably interposed between a head body and a core and the plastic material is successively accumulated in an accumulation chamber defined between the extruding end of the plunger, the head body and the core so that the faster the plastic material is introduced into the extrusion head, the faster it is extruded.
    Type: Grant
    Filed: June 5, 1981
    Date of Patent: December 27, 1983
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Akira Iwawaki, Eiji Horiuchi, Sadahiko Shinya, Kinshiro Kojima, Katsuo Kodama, Kotaro Kawabata, Hisahiko Fukase
  • Blow molding apparatus
    Patent number: 4149839
    Abstract: A blow molding method and machine and more particularly a method and machine for extruding a multi-layer parison for blow molding, wherein at least two layers of molding plastics, each plastic compensating the poor or undesirable physical and chemical properties of the other plastic and/or each having a different color are forced to flow through different passages having an annular cross sectional configuration, and are joined at the junction of a short passage to be extruded into a multi-layer parison.
    Type: Grant
    Filed: March 11, 1977
    Date of Patent: April 17, 1979
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Akira Iwawaki, Kinshiro Kojima, Hisahiko Fukase, Yoshiharu Shitara, Akihiro Nomura, Takehiko Sato, Hideo Shibata