Patents by Inventor Brigitte Wittmann, nee Liebold

Brigitte Wittmann, nee Liebold 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 to determine automatically the sequence of amino acids
    Patent number: 3959307
    Abstract: Method and apparatus for automatically converting of thiazolinone amino acids into phenyl thiohydantoin amino acids as a stage in amino acid sequence analysis of proteins and peptides. According to the invention a solution of thiazolinone amino acids is, under continuous exclusion of oxygen, introduced into a reaction vessel and evaporated to dryness. Then there is added an aqueous trifluoro acetic acid solution or dilute hydrochloric acid, containing a mercaptan, and again evaporated, followed by dissolving of the residue in a mixture of dichloroethane and methanol.
    Type: Grant
    Filed: February 15, 1974
    Date of Patent: May 25, 1976
    Inventors: Brigitte Wittmann, nee Liebold, Horst Graffunder