Patents by Inventor Isao Karasudani

Isao Karasudani 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).

  • Interlayer for laminated glass
    Patent number: 4925725
    Abstract: An interlayer for a laminated glass, said interlayer being composed of a film or sheet of a thermoplastic resin, at least one surface of the film or sheet of a thermoplastic resin having numerous coarse raised and depressed portions and numerous fine raised and depressed portions existing on the surfaces of the coarse raised and depressed portions, the average distance between two adjacent coarse depressed or raised portions being about 2 to about 10 times the 10-point average roughness of the coarse raised and depressed portions measured in accordance with ISO-R468.
    Type: Grant
    Filed: January 4, 1989
    Date of Patent: May 15, 1990
    Assignee: Sekisui Kagaku Kogyo Kabushiki Kaisha
    Inventors: Gen Endo, Hiroyuki Tateishi, Yoshihiro Kawata, Isao Karasudani, Hirofumi Omura
  • Laminated glass structures and process for production thereof
    Patent number: 4020217
    Abstract: A laminated safety glass structure which comprises at least two glass sheets bonded to each other through an interlayer of a plasticized polyvinyl acetal resin treated with a specific modified siloxane alone or together with a specific alkali metal or alkaline earth metal salt of an organic mono- or di-carboxylic acid. This structure has a highly improved penetration resistance along with superior transparency, aging resistance and weatherability, and is suitable for use as windowpanes in transportation facilities and buildings.
    Type: Grant
    Filed: March 7, 1975
    Date of Patent: April 26, 1977
    Assignee: Sekisui Kagaku Kogyo Kabushiki Kaisha
    Inventors: Isao Karasudani, Toshiyuki Takashima, Yoshiyuki Bokuda