Patents Assigned to Diafoil Hoescht Company Limited
  • Laminated polyester film for magnetic tape
    Patent number: 5441800
    Abstract: A laminated polyester film for a magnetic tape, which film comprises a layer of a crystalline polyester (A) and a layer of a polyester (B) which is laminated on at least one surface of the layer of the polyester (A) and has a melting point lower than that of the polyester (A), and which film has a Young's modulus of at least 600 kg/mm.sup.2 in both longitudinal and transverse directions, which film is suitable as a base film of a video tape.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: August 15, 1995
    Assignee: Diafoil Hoescht Company, Limited
    Inventor: Shigeo Utsumi
  • Biaxially oriented laminated polyester film for magnetic recording media
    Patent number: 5429855
    Abstract: A biaxially oriented laminated polyester film for magnetic recording media, which has excellent surface uniformity, slittability, running property and cost performance, and in which a magnetic tape produced therefrom shows a very small number of scratches and a very small amount of abrasion dust.
    Type: Grant
    Filed: April 27, 1993
    Date of Patent: July 4, 1995
    Assignee: Diafoil Hoescht Company, Limited
    Inventors: Tomoyuki Kotani, Kazuo Endo
  • Radiation sensitized paper
    Patent number: 5397674
    Abstract: A radiation sensitized paper having a polyester film, a coating layer which contains a water-soluble or water-dispersible resin and is formed on a surface of the polyester film, a resin layer which is formed on the coating layer and a fluorescent material layer which is formed on the resin layer, in which adhesion of the fluorescent material layer is good.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: March 14, 1995
    Assignee: Diafoil Hoescht Company Limited
    Inventors: Yoshihide Ozaki, Satoshi Otonari, Masahiro Kita