Patents Assigned to Tokyo Bi-Tech Laboratories, Inc.
  • Blood cleaning hollow fiber membrane method for cleaning blood, and apparatus therefor
    Patent number: 5075003
    Abstract: The present invention discloses a blood cleaning hollow fiber membrane characterized by comprising a hydrophobic porous hollow fiber membrane and having a hydrophilic thin layer formed at least on the inner surface of said hollow fiber membrane by the grafting of a hydrophilic compound through the agency of a gamma ray, a method for the cleaning blood and an apparatus therefor using the same.
    Type: Grant
    Filed: May 28, 1990
    Date of Patent: December 24, 1991
    Assignee: Tokyo Bi-Tech Laboratories, Inc.
    Inventor: Juuro Aoyagi
  • Blood cleaning hollow fiber membrane, method for cleaning blood, and apparatus therefor
    Patent number: 4940541
    Abstract: The present invention discloses a blood cleaning hollow fiber membrane characterized by comprising a hydrophobic porous hollow fiber membrane and having a hydrophilic thin layer formed at least on the inner surface of said hollow fiber membrane by the grafting of a hydrophilic compound through the agency of a gamma ray, a method for the cleaning blood and an apparatus therefor using the same.
    Type: Grant
    Filed: November 1, 1988
    Date of Patent: July 10, 1990
    Assignee: Tokyo Bi-Tech Laboratories, Inc.
    Inventor: Juuro Aoyagi
  • Tongue depressor
    Patent number: D317821
    Type: Grant
    Filed: August 25, 1988
    Date of Patent: June 25, 1991
    Assignee: Tokyo Bi-Tech Laboratories, Inc.
    Inventor: Juuro Aoyagi