Patents by Inventor Heinrich H. Peter

Heinrich H. Peter 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 for the preparation of complex compounds
    Patent number: 5051523
    Abstract: There is disclosed a process for the preparation of analytically pure chelate complexes which can be used in diagnostic medicine, for example as contrast media or radiopharmaceuticals. The process comprises transcomplexing a complex of a .beta.-dicarbonyl compound and a metal ion, for example a metal acetylacetonate, which is readily soluble in an organic solvent that is not miscible in all proportions with water, with a stoichiometric amount or with a less than equivalent amount of a chelating agent whose binding affinity for the metal ion is greater than that of the .beta.-dicarbonyl compound.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: September 24, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Heinrich H. Peter, Theophile Moerker