Patents by Inventor Donald L. Tankersley

Donald L. Tankersley 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).

  • Intravenously injectable solution of plasma protein fraction free from bradykinin, kininogen and prekallikrein activators and processes for its production
    Patent number: 4378346
    Abstract: Plasma Protein Fraction substantially free of bradykinin, kininogen and prekallikrein activators is obtained by treating Cohn Supernatant II plus III at about neutrality with a siliceous substance for a period of time sufficient to bring about essentially complete conversion of intrinsic kininogen into bradykinin. Subsequently, after being separated from Cohn Fraction IV-1, the Plasma Protein Fraction is reconstituted and held for a period of time sufficient to allow substantially complete destruction of bradykinin by kininase. Methods are disclosed for the destruction of prekallikrein activators which may be present in Plasma Protein Fraction.
    Type: Grant
    Filed: October 15, 1980
    Date of Patent: March 29, 1983
    Inventor: Donald L. Tankersley
  • Intravenously injectable solution of plasma protein fraction free from bradykinin, kininogen and prekallikrein activators and processes for its production
    Patent number: 4251510
    Abstract: Plasma Protein Fraction substantially free of bradykinin, kininogen and prekallikrein activators is obtained by treating Cohn Supernatant II plus III at about neutrality with a siliceous substance for a period of time sufficient to bring about essentially complete conversion of intrinsic kininogen into bradykinin. Subsequently, after being separated from Cohn Fraction IV-1, the Plasma Protein Fraction is reconstituted and held for a period of time sufficient to allow substantially complete destruction of bradykinin by kininase. Methods are disclosed for the destruction of prekallikrein activators which may be present in Plasma Protein Fraction.
    Type: Grant
    Filed: August 15, 1979
    Date of Patent: February 17, 1981
    Assignee: Cutter Laboratories, Inc.
    Inventor: Donald L. Tankersley