Patents by Inventor Friedrich Elsinger

Friedrich Elsinger 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).

  • Blood product, a method of producing the same and a method of determining the virus inactivation capacity of an inactivation treatment
    Patent number: 5864016
    Abstract: A blood product, exclusive of albumin, inactivated relative to infectious agents, the blood product conforming to a total virus reduction factor of at least 40, having a biological acitity of at least 50%, based on its activity prior to effecting inactivation of the infectious agents, the blood product being producible from conventional blood products and being virus-safe.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: January 26, 1999
    Assignee: Immuno Aktiengesellschaft
    Inventors: Johann Eibl, Friedrich Elsinger, Yendra Linnau, Gunther Wober
  • Method of determining the virus inactivation capacity of an inactivation treatment
    Patent number: 5614405
    Abstract: This invention is directed to a method of evaluating viral reduction capability of a viral inactivation step in a viral inactivation procedure. The method requires spiking a biological product with a virus more than once during the viral inactivation step so that a virus reduction factor can be calculated.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: March 25, 1997
    Assignee: Immuno Aktiengesellschaft
    Inventors: Johann Eibl, Friedrich Elsinger, Yendra Linnau, Gunther Wober
  • Method of producing a factor VIII preparation
    Patent number: 5410022
    Abstract: The invention relates to a method of producing virus-safe highly purified factor VIII. The method includes a combination of the following measures:a) chromatographic purification of a factor VIII-containing fraction,b) tenside treatment of factor VIII in an aqueous solution at a tenside/protein ratio of from 1:1 to 1000:1, andc) heat treatment of the factor VIII preparation in the solid state.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: April 25, 1995
    Assignee: Immuno Aktiengesellschaft
    Inventors: Johann Eibl, Friedrich Elsinger, Herbert Gritsch, Yendra Linnau, Otto Schwarz, Peter Turecek, Gunther Wober