Patents by Inventor Tutomu Suyama

Tutomu Suyama 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).

  • Process for producing hoses of high impermeability to gas and vapor
    Patent number: 4950436
    Abstract: A process is disclosed for producing a composite hose constructed with a core tube, a reinforcement layer and a cover laminated one on another, the core being made up of a resin inner wall and a rubber outer wall. Gas impermeability and flexibility are enhanced by formation of the inner wall on a mandrel of selected synthetic material and specified bending strength.
    Type: Grant
    Filed: April 20, 1989
    Date of Patent: August 21, 1990
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Tetsu Kitami, Jun Mito, Tutomu Suyama
  • Hot melt adhesives from lactam copolyamides
    Patent number: 3933762
    Abstract: Hot-melt adhesives for fibers consisting essentially of copolyamides obtained by polymerizing four monomer units, namely, .epsilon.-caprolactam, hexamethylenediammonium adipate, hexamethylenediammonium sebacate, and laurolactam in specific proportions.
    Type: Grant
    Filed: June 19, 1974
    Date of Patent: January 20, 1976
    Assignee: Toray Industries, Inc.
    Inventors: Nagayoshi Naito, Sadakatu Hashimoto, Yoshiyuki Komuro, Tutomu Suyama, Yukio Yonekura