Patents by Inventor Takeo Ohshima

Takeo Ohshima 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 modifying regenerated cellulose fiber
    Patent number: 4475917
    Abstract: A process for producing a regenerated cellulose fiber having a good hand and a good shrink resistance characterized by attaching a liquid not readily soluble in liquid ammonia and adsorbable on regenerated cellulose fiber to the surface of regenerated cellulose fiber or attaching a polymer to the surface of regenerated cellulose fiber in the form of a film or not carrying out the surface treatment mentioned above, and adjusting the moisture content of said regenerated cellulose fiber to 5% or more based on the absolute dry weight of said fiber, and thereafter impregnating said regenerated cellulose fiber with liquid ammonia, and subsequently removing the ammonia from the regenerated cellulose fiber.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: October 9, 1984
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Takeo Ohshima, Shigeki Ohtani