Patents by Inventor Yutaka Sakurada

Yutaka Sakurada 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).

  • Semi-permeable membranes of regenerated cuprammonium cellulose and method for heat sterilization thereof in physiological saline
    Patent number: 4176070
    Abstract: Semi-permeable membranes of regenerated cellulose are subjected to wet-heat sterilization at a temperature of 105.degree. to 140.degree. C. During the treatment, the membranes are maintained in contact with an aqueous medium such as water or physiological saline. For the dialysis of body fluids, hollow fiber, semi-permeable membranes so sterilized exhibit a sonic modulus of at least 6.5.times.10.sup.10 dynes/cm.sup.2. Hollow fibers made of cuprammonium regenerated cellulose are particularly preferred for the above purpose.
    Type: Grant
    Filed: March 15, 1978
    Date of Patent: November 27, 1979
    Assignees: Kuraray Co., Ltd., Kawasumi Laboratories, Inc.
    Inventors: Yutaka Sakurada, Kimihisa Sunahara, Kazuhisa Yamauchi