Patents by Inventor Yoshimi Nakanishi

Yoshimi Nakanishi 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).

  • Method of fabricating frozen fine liver piece for artificial liver, apparatus for freezing the same and freezing vessel
    Patent number: 4987921
    Abstract: A method of fabricating frozen fine liver pieces for an artificial liver which comprises cutting a liver removed from a human being or an animal, from which blood is removed into fine pieces of square shape and freezing the liver pieces with helium gas. A freezing apparatus for an artificial liver which has gas phase pressurizing means for pressurizing liquid helium coupled to a chamber for storing the liquid helium, a helium gas conduit dipped in the liquid helium passed through the chamber to be closed and contained, in which the liver fine pieces are telescopically received and an exhaust conduit provided with a control valve coupled to the freezing chamber.
    Type: Grant
    Filed: September 15, 1989
    Date of Patent: January 29, 1991
    Assignee: Hoxan Corporation
    Inventors: Yoichi Kasai, deceased, Akio Kawamura, Yoshimi Nakanishi, Akira Kakita, Toshihiko Tsuburaya, Yasuo Kuraoka, Nobuo Sakao
  • Method of fabricating frozen fine liver pieces for artificial liver, apparatus for freezing the same, and freezing vessel
    Patent number: 4883452
    Abstract: A method of fabricating frozen fine liver pieces for an artificial liver which comprises cutting a liver removed from a human being or an animal, from which blood has been removed, into fine pieces of square shape and freezing the liver pieces with helium gas. A freezing apparatus for an artificial liver which has gas phase pressurizing means for pressurizing liquid helium coupled to a chamber for storing the liquid helium, a helium gas conduit dipped in the liquid helium passed through the chamber to be closed and contained, to which the liver fine pieces are telescopic, and an exhaust conduit provided with a control valve coupled to the freezing chamber.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: November 28, 1989
    Assignee: Hoxan Corporation
    Inventors: Yoichi Kasai, deceased, Akio Kawamura, Yoshimi Nakanishi, Akira Kakita, Toshihiko Tsuburaya, Yasuo Kuraoka, Nobuo Sakao