Patents by Inventor Peter Pfaender

Peter Pfaender 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).

  • Process and apparatus for the synthesis of peptides by use of n-carboxyanhydrides
    Patent number: 3951741
    Abstract: Method and apparatus are provided for preparing polypeptides by conjugating arginine as an end group to a polyethyleneimine water soluble polymer, stepwise addition of amino acids as their N-carboxyanhydrides to prepare the desired polypeptide, enzymatic cleavage of the polypeptide with the arginine group from the polyethyleneimine and enzymatic cleavage of the arginine to provide the desired polypeptide. An automated apparatus is provided for performing the above process.
    Type: Grant
    Filed: July 3, 1974
    Date of Patent: April 20, 1976
    Inventors: Peter Pfaender, Helmut Pratzel, Hartmut Blecher