Patents by Inventor Isao Hayatsu

Isao Hayatsu 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 producing a composite laminate
    Patent number: 4994130
    Abstract: A method for continuously producing a composite laminate comprising a thermoplastic synthetic resin sheet and an aluminum sheet laminated on each side of the resin sheet, wherein(1) as the thermoplastic resin sheet, a solid sheet is used,(2) as the aluminum sheet, an aluminum sheet having a thermoplastic adhesive layer provided on its surface is used,(3) two such aluminum sheets with the respective adhesive layers facing to each other, with the thermoplastic synthetic resin sheet interposed therebetween, are fed to hot press bonding rollers, and(4) when they are fed to the hot press bonding rollers, (a) a tension of at least 2 kg/mm.sup.2 is exerted to each aluminum sheet, and (b) the thermoplastic adhesive layer provided on the surface of each aluminum sheet is maintained to be in a molten state.
    Type: Grant
    Filed: August 17, 1989
    Date of Patent: February 19, 1991
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Kunihiko Ichikawa, Kiyoshi Mishima, Kunio Tsukagoshi, Isao Hayatsu, Toshiharu Yamazaki