Patents by Inventor Shokichi Eiga

Shokichi Eiga 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).

  • Hollow fibers of cuprammonium cellulose and a process of the manufacture of same
    Patent number: RE32277
    Abstract: An improved dialyzing hollow fiber of cuprammonium regenerated cellulose, showing a substantially similar network structure of fine gap passage routes having a max. gap size of 200 A when .[.seen.]. .Iadd.observed .Iaddend.at .[.its.]. any cross-section and .[.logitudinal.]. .Iadd.longitudinal .Iaddend.section, having skinless structure at its inside and outside surface of the hollow fiber and representing a superior water permeability.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: November 4, 1986
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Masami Tsuge, Shinichi Uematsu, Yotsuo Ono, Shokichi Eiga, Minoru Makita