Patents by Inventor Sumio Toudou

Sumio Toudou 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).

  • Aromatic imide polymer laminate material and method for producing the same
    Patent number: 4411952
    Abstract: An aromatic imide polymer laminate material comprising at least one aromatic imide polymer film consisting essentially of at least one aromatic imide polymer which comprises at least 80 molar % of at least one type of recurring unit of the formula (I): ##STR1## wherein R represents a divalent aromatic radical; and at least one metallic foil which is superimposed on and directly bonded to said aromatic imide polymer film, which laminate material is produced by heat-pressing said aromatic imide polymer film superimposed on said metallic foil at 250.degree. to 600.degree. C. under a pressure of 1 to 2,000 kg/cm.sup.2 without applying a bonding agent between the polymer film and the metallic foil.
    Type: Grant
    Filed: April 20, 1982
    Date of Patent: October 25, 1983
    Assignee: UBE Industries, Ltd.
    Inventors: Yoshikazu Sasaki, Hiroshi Inoue, Tadashi Miura, Kazuo Kumamoto, Sumio Toudou