Patents by Inventor Hartmut Schurig (deceased)

Hartmut Schurig (deceased) 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).

  • METHOD FOR PURIFYING PEGylated ERYTHROPOIETIN
    Publication number: 20140163207
    Abstract: Herein is reported a method for the purification of a protein comprising erythropoietin and a single poly (ethylene glycol) residue from reaction by-products or not reacted starting material by a cation exchange chromatography method. It has been found that by employing a cation exchange SP Sephacryl™ S 500 HR chromatography material conditioned to a conductivity of 21 mS/cm and a linear gradient elution a fusion protein of erythropoietin and a single poly (ethylene glycol) residue can be obtained in a single step with high purity and yield.
    Type: Application
    Filed: November 26, 2013
    Publication date: June 12, 2014
    Applicant: Hoffmann-La Roche Inc.
    Inventors: Roberto Falkenstein, Wolfgang Koehnlein, Wolfgang Kuhne, Hartmut Schurig (deceased)