Patents by Inventor Warren B. Hancock

Warren B. Hancock 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).

  • Biological material pre-fixation treatment
    Patent number: 5595571
    Abstract: Disclosed is a controlled autolysis method for making biological tissue substantially acellular by exposing the biological material, prior to any fixation thereof, to at least one buffered solution having a pH in the range from about 5.0 to 8.0 and a temperature in the range from about 12.degree. C. to 30.degree. C. for a sufficient period of time to render at least one region of the biological material substantially acellular while substantially preserving the structural integrity and non-cellular structural components of the biological material. Also disclosed is a method of making a bioprosthetic heart valve using biological material that has been treated by controlled autolysis and a method of treating a mammal having a defective heart valve using a bioprosthetic heart valve made, in part, by controlled autolysis.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: January 21, 1997
    Assignee: Hancock Jaffe Laboratories
    Inventors: Norman Jaffe, Warren B. Hancock