Patents by Inventor Gerhard Bjorn Stark

Gerhard Bjorn Stark 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).

  • Injectable bone substitute material
    Publication number: 20040101960
    Abstract: The invention relates to a bone substitute material which comprises a soft matrix, living cells and a setting matrix. The invention also relates to processes for producing such a bone substitute material and to the use of non-ceramic hydroxyapatite cement for producing a cell-containing bone substitute material. The latter can be injected minimally invasively into a bone defect in a suitable injection apparatus relevant for the invention.
    Type: Application
    Filed: November 20, 2003
    Publication date: May 27, 2004
    Applicant: Universitaetsklinikum Freiburg
    Inventors: Dirk Johannes Schaefer, Thomas Kiefer, Gerhard Bjorn Stark, Ulrich Kneser
  • Injectable bone substitute material containing non-ceramic hydroxyapatite cement
    Patent number: 6703038
    Abstract: A bone substitute material is prepared which comprises a soft matrix, living cells and a setting matrix comprising non-ceramic hydroxyapatite cement. The bone substitute material can be injected minimally invasively into a bone defect with a suitable injection apparatus. In an embodiment, living cells are mixed with a fibrinogen solution and then with a thrombin solution to form the soft matrix, and the soft matrix is mixed with an aqueous solution of non-ceramic hydroxyapatite cement to obtain the bone substitute material which remains unsolidified until after application to a body.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: March 9, 2004
    Assignee: Universitaetsklinikum Freiburg
    Inventors: Dirk Johannes Schaefer, Thomas Kiefer, Gerhard Bjorn Stark, Ulrich Kneser