Patents by Inventor Max W. Scheiwe

Max W. Scheiwe 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 and apparatus for freezing living cells
    Patent number: 4327799
    Abstract: The process for freezing cell suspensions by locating the suspension in a freezing chamber and simultaneously monitoring the temperature of the suspended cells and of the chamber. The cooling of the chamber is regulated at predetermined rates in response to give temperature levels of the sample. The cooling chamber includes a fan, a heater, and a source of refrigerant. The process includes the steps of selectively decreasing and increasing the temperature of the freezing chamber responsive to predetermined temperature points on the freezing curve of the cell sample.
    Type: Grant
    Filed: February 27, 1980
    Date of Patent: May 4, 1982
    Assignee: Helmholtz-Institut fur Biomedizinische Technik
    Inventors: Max W. Scheiwe, Gunther Rau
  • Process and apparatus for freezing living cells
    Patent number: 4304293
    Abstract: The process for freezing cell suspensions by locating the suspension in a freezing chamber and simultaneously monitoring the temperature of the suspended cells and of the chamber. The cooling of the chamber is regulated at predetermined rates in response to given temperature levels of the sample. The cooling chamber includes a fan, a heater, and a source of refrigerant. The process includes the steps of selectively decreasing and increasing the temperature of the freezing chamber responsive to predetermined temperature points on the freezing curve of the cell sample.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: December 8, 1981
    Assignee: Helmholtz-Institut fur Biomedizinische Technik
    Inventors: Max W. Scheiwe, Gunter Rau