Patents by Inventor Peter Kirch

Peter Kirch 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).

  • Certain -N-(amino benzoyl)-N'-(pyridyldithioalkanoyl)-hydrazines and derivatives thereof
    Patent number: 4925945
    Abstract: The present invention provides compounds of the general formula: ##STR1## wherein A is an amine-substituted aromatic radical and X is a hydrocarbon radical containing up to 10 carbon atoms.The present invention also provides a process for the preparation of these compounds.Furthermore, the present invention is concerned with the use of the compounds for introducing SH groups into tyrosine.
    Type: Grant
    Filed: March 22, 1989
    Date of Patent: May 15, 1990
    Assignee: Boehringer Mannheim GmbH
    Inventors: Christian Klein, Peter Kirch
  • Immunochemical process and reagent for the determination of a polyvalent antigen in a liquid sample
    Patent number: 4885255
    Abstract: The present invention provides a process for the quantitative determination of a polyvalent antigen by incubation with three different receptors of which the first (R1) and the third (R3) are present in liquid phase and are bindable with the antigen, the second receptor (R2) is present in solid phase and is bindable with receptor (R1), and receptor (R3) carries a label and does not cross-react with (R1) and (R2), separation of the solid phase from the liquid phase and measurement of the label in one of the phases, wherein a first receptor (R1) is used which consists of at least two antibody molecules or antibody molecule fragments bound with one another, at least one of which binds specifically with the antigen to be determined.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: December 5, 1989
    Assignee: Boehringer Mannheim GmbH
    Inventors: Werner Stock, Manfred Baier, Klaus P. Kaspar, Peter Kirch