Patents by Inventor Shunroku Tohyama

Shunroku Tohyama 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).

  • Patent number: 4803116
    Abstract: A waterproof fabric having a high moisture permeability and having an ultra-microporous continuous polymer coating having an average pore diameter in the range of between 50 .ANG. and 0.2.mu., said polymer having a monomer unit containing at least one acid radical selected from carboxyl group, sulfonic acid group, and alkali metal salts thereof.
    Type: Grant
    Filed: October 30, 1986
    Date of Patent: February 7, 1989
    Assignee: Toray Industries Incorporated
    Inventors: Jiro Amano, Masato Shimada, Kouzou Takano, Shunroku Tohyama
  • Patent number: 4794037
    Abstract: A fabric containing a cellulosic fiber and a polyester fiber having a carbonization burning mechanism, superior in flame-proofness and having a soft touch. The fabric contains a halogen- and/or phosphorus-based flame-proofing agent, and preferably also contains an amino resin.
    Type: Grant
    Filed: February 2, 1987
    Date of Patent: December 27, 1988
    Assignee: Toray Industries Incorporated
    Inventors: Yoshinori Hosoda, Shunroku Tohyama, Heiroku Suganuma
  • Patent number: 4613529
    Abstract: The present invention provides an artificial fur of a rising hair structure formed by implanting pile fibers through a base fabric, characterized in that the pile fibers are inclined generally longitudinally, as viewed from above the surface, the pile fibers in the widthwise central section of the rising hair structure extend in parallel to the longitudinal direction, the pile fibers in the opposite peripheral sections extend diagonally widthwise with respect to the longitudinal direction and the pile fibers in the outermost sections of the rising hair structure extend diagonally at angles in the range from 10 to 80 degrees with respect to the longitudinal direction of the rising hair structure. The present invention enables stable and economic mass production of such an artificial fur by means of a liquid-flow treatment machine.
    Type: Grant
    Filed: September 25, 1985
    Date of Patent: September 23, 1986
    Assignee: Toray Industries, Inc.
    Inventors: Yasuo Yamashita, Yoshiteru Kiyomura, Shunroku Tohyama
  • Patent number: 4490149
    Abstract: A process for producing modified polyester products by the graft polymerization of vinyl monomers having an acidic group and replacing the acidic group with an alkali metal salt, the replacing being carried out after dyeing. By this process, decrease in strength and color fastness of polyester fibers can be avoided while giving the polyesters characteristics similar to those of cotton.
    Type: Grant
    Filed: September 9, 1983
    Date of Patent: December 25, 1984
    Assignee: Toray Industries, Inc.
    Inventors: Kouichi Saitou, Shunroku Tohyama, Yoshikazu Kosaka
  • Patent number: 4420522
    Abstract: The production of pile fabric, comprising the use of a compound of two or more azilidine groups or two or more blocked isocyanate groups in one molecule, with a polyurethane solution as a binding agent is disclosed. The binding strength of the binding agent is not affected by high-temperature, high-pressure jet-dyeing or the solvent used in dry-cleaning. There is no loss of quality as a result of pile fall-out during such processes.
    Type: Grant
    Filed: December 13, 1982
    Date of Patent: December 13, 1983
    Assignee: Toray Industries, Inc.
    Inventors: Yutaka Masuda, Toshiaki Takai, Shunroku Tohyama
  • Patent number: 4145371
    Abstract: Disclosed is a highly flame-retardant fiber of excellent color-fastness which is made from the mixture composition of 30 to 60 parts of an amino resin composed of a condensation product of formaldehyde with melamine and other amino compounds selected from, urea, dicyandiamide and benzoguanamine, and 70 to 40 parts of polyvinyl alcohol. The incorporation of 0.1 to 4.0% by weight of phosphorus by the addition of a reactive organic phosphorous compound to the spinning dope or to the wet filaments before drawing causes noticeable enhancement of the flame-retardance. Curing and crosslinking may be carried out during the yarn-making process of spinning, drawing and heat-setting or after the yarn-making process by treatment in an acidic formaldehyde environment.
    Type: Grant
    Filed: May 24, 1977
    Date of Patent: March 20, 1979
    Assignee: Toray Industries, Inc.
    Inventors: Shunroku Tohyama, Yutaka Masuda, Tatsuo Nogi
  • Patent number: 3944522
    Abstract: High modulus, high tenacity aromatic polyhydrazide fiber composed ofA. a polyterephthal hydrazide unitB. a poly p-benzamide unit andC. a poly p-phenylene terephthalamide unit, and method of making same.
    Type: Grant
    Filed: June 16, 1972
    Date of Patent: March 16, 1976
    Assignee: Toray Industries, Inc.
    Inventors: Shunroku Tohyama, Takuma Jinda, Shigemitsu Saito, Yoshizo Tsuda, Satoshi Shinohara