Patents by Inventor Wihelm Stendel

Wihelm Stendel 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).

  • 2',3,6'-Trichloro-4-cyano-4'-[N-(N' -(o-substituted-benzoyl))-ureido]-diphenyl ether insecticides
    Patent number: 4064267
    Abstract: 2',3,6'-Trichloro-4-cyano-4'-[N-(N'-o-substituted-benzoyl))-ureido]-dipheny l ethers of the formula ##STR1## in which R represents chlorine, fluorine, bromine or methyl, which possess insecticidal properties.
    Type: Grant
    Filed: July 12, 1976
    Date of Patent: December 20, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wilhelm Sirrenberg, Jurgen Schramm, Erich Klauke, Ingeborg Hammann, Wihelm Stendel