Patents by Inventor Harmut Joppien

Harmut Joppien 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).

  • Thiazolylidene-oxo-propionitriles, insecticidal composition containing these compounds
    Patent number: 4297361
    Abstract: A thiazolylidene-oxo-propionitriles of the formula ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 have the meaning defined in the specification. The compounds are valuable as insecticides of a superior activity against specific groups of insects.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: October 27, 1981
    Assignee: Schering Aktiengesellschaft
    Inventors: Reinhold Puttner, Ulrich Buhmann, Harmut Joppien