Patents by Inventor Kazushige Kudo

Kazushige Kudo 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 of manufacturing polyester fibers with good adhesion to rubber
    Patent number: 4477497
    Abstract: This invention is a method of manufacturing polyester fibers with good adhesion to rubber, characterized in that in the process of spinning polyester fibers, a spinning oil (finish composition) containing an epoxy compound and a novolak resin made from a dimethylolated phenolic compound and resorcinol is added to the polyester fibers which are then heat treated.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: October 16, 1984
    Assignee: Unitika Limited
    Inventors: Kazushige Kudo, Shigeo Yamamoto, Shigemitsu Murase
  • Method of manufacturing polyester fibers with good adhesion to rubber
    Patent number: 4467064
    Abstract: This invention is a method of manufacturing polyester fibers with good adhesion to rubber, characterized in that in the process of spinning polyester fibers, a spinning oil (finish composition) containing an epoxy compound and a novolak resin made from a dimethylolated phenolic compound and resorcinol is added to the polyester fibers which are then heat treated.
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: August 21, 1984
    Assignee: Unitika Ltd.
    Inventors: Kazushige Kudo, Shigeo Yamamoto, Shigemitsu Murase
  • Method of manufacturing polyester fibers with good adhesion to rubber
    Patent number: 4403049
    Abstract: A method of manufacturing polyester fibers with good adhesion to rubber is disclosed, characterized in that, in the process of spinning polyester fiber, a spinning oil containing an epoxy compound, an ethylene urea compound, and an ethylene urea compound polymerization catalyst is added, and it is then heat treated.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: September 6, 1983
    Assignee: Unitika Limited
    Inventors: Shigemitsu Murase, Kazushige Kudo, Shigeo Yamamoto
  • Melt-processable copolyamides having aromatic amide unit and fibers prepared therefrom
    Patent number: 4385170
    Abstract: A melt-processable copolyamide prepared from diamines and dicarboxylic acids by a melt-polymerization process, wherein said copolyamide contains from about 1 to 20 mol % of an aromatic amide unit having the formula ##STR1## wherein X and Y are aromatic units with extended bonds, such as 1,4-phenylene group. This copolyamide provides fiber with higher stiffness.
    Type: Grant
    Filed: May 29, 1981
    Date of Patent: May 24, 1983
    Assignee: Unitika Ltd.
    Inventors: Matsuo Hirami, Kazushige Kudo, Tsutomu Sugie, Toshihide Hibino, Ryoichi Tsurutani, Shigemitsu Murase
  • Method for manufacturing heat-stable polyesters using phosphonic acid compounds with cyclic carbonates and catalyst
    Patent number: 4374961
    Abstract: This invention is a method of manufacturing heat-stable polyesters, characterized in that phosphonic acid compounds are added, when heat-stable polyesters with decreased terminal carboxyl groups are manufactured by reacting polyesters and cyclic carbonate compounds in the presence of an alkali halide compound catalyst.
    Type: Grant
    Filed: May 29, 1981
    Date of Patent: February 22, 1983
    Assignee: Unitika Limited
    Inventors: Kazushige Kudo, Yoshihiro Arai, Ryoichi Tsurutani, Shun-ichi Kiriyama
  • Method for manufacturing polyester fibers with good adhesion to rubber
    Patent number: 4374031
    Abstract: This invention is a method for manufacturing polyester fibers with good adhesion to rubber, characterized in that in the process of making the filaments, a filament-making oil (spin finish) containing epoxy, blocked isocyanate, and polyoxyalkylene amine compounds is added to the polyester fibers, and they are then heat-treated.
    Type: Grant
    Filed: May 29, 1981
    Date of Patent: February 15, 1983
    Assignee: Unitika Limited
    Inventors: Kazushige Kudo, Shigeo Yamamoto, Shigemitsu Murase