Patents by Inventor Susan F. Schaeffer

Susan F. Schaeffer 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).

  • Cryopreservation of cultured epithelial sheets
    Patent number: 5145770
    Abstract: Disclosed is a method of cryopreserving a sheet of living, cultured epithelial cells for use as a skin wound dressing. The method ensures that the integrity of the sheet will be maintained, and it preserves a significant number of cells in a mitotically competent, physiologically healthy form. It involves use of a non cell penetrating cryoprotectant and certain freezing and thawing conditions.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: September 8, 1992
    Assignee: BioSurface Technology, Inc.
    Inventors: Ross A. Tubo, Susan F. Schaeffer, Alexander Schermer, Richard Odessey
  • Cool storage of cultured epithelial sheets
    Patent number: 5100676
    Abstract: The viability of cohesive sheets of cultured epithelial cells such as keratinocytes used as wound dressings is maintained or improved by storage at a temperature within the range of 8.degree.-25.degree. C., preferably 13.degree.-23.degree. C., for periods greater than 8 hours, preferably up to 26 hours. This method and the resulting product permits a significant increase in the shipping radius of cultured dressings manufactured in a central facility, and increases flexibility in scheduling of shipments and surgical procedures.
    Type: Grant
    Filed: February 2, 1990
    Date of Patent: March 31, 1992
    Assignee: Biosurface Technology, Inc.
    Inventors: Richard Odessey, Alexander Schermer, Susan F. Schaeffer, Ross A. Tubo