Patents Assigned to Alfacell Corp.
  • Pharmaceuticals and method for making them
    Patent number: 5728805
    Abstract: Rana pipiens eggs are subjected to mechanical processing in the presence of a weakly acidic buffer to produce an extract. The extract is subjected to ion-exchange chromatography and size-exclusion chromatography. Two pharmaceuticals resulting from these steps have activity against certain cancer cells. The amino acid sequences and compositions of two preferred embodiments are disclosed.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: March 17, 1998
    Assignee: Alfacell Corp.
    Inventor: Wojciech J. Ardelt