Patents by Inventor Kurt Klemm

Kurt Klemm 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).

  • Therapeutic piperazinylalkyl-quinazolone-(4)-derivatives
    Patent number: 3984555
    Abstract: Aryl-substituted piperazinylalkyl-quniazolone-(4) derivatives suitable for se as hypotensive, antihistaminic, and analgesic drugs are described. Process for the preparation of the compounds by (1) intra molecular condensation of the product obtained from the reaction of a halogen carboxylanilide with an aryl piperazine; (2) reaction of an .omega.-halogen-alkyl quinazolone with an aryl piperazine; or (3), reaction of an anthranilic acid with a (4-aryl-piperazinyl-(1) carboxylamide, nitride, amidine, or iminoester, followed by alkylation of the product are also described. Pharmaceutical compositions containing the compounds and halogenalkanoic acid-6-carbamyl anilides useful for preparing the compounds are disclosed.
    Type: Grant
    Filed: May 28, 1971
    Date of Patent: October 5, 1976
    Assignee: Byk Gulden Lomberg Chemische Fabrik Gesellschaft mit beschrankter Haftung
    Inventors: Hermann Amschler, Wolfgang Schoetensack, Kurt Klemm
  • Aryl-substituted piperazinyl-alkylamino-uracils, -uracil ethers and -uracil thioethers and method for their production
    Patent number: 3957786
    Abstract: Aryl-substituted piperazinyl-alkylamino-uracils, the corresponding uracil ethers and uracil-thioethers and their pharmaceutically acceptable salts such as the hydrochloride, and method for the preparation of these compounds. The novel compounds are useful for lowering the blood pressure in mammalians.
    Type: Grant
    Filed: August 20, 1970
    Date of Patent: May 18, 1976
    Assignee: Byk Gulden
    Inventors: Kurt Klemm, Wolfgang Schoetensack, Wolfgang Prusse
  • Formylazapentadienenitriles
    Patent number: 3944667
    Abstract: Insecticidal, fungicidal and bactericidal substituted formylazapentadienenitriles are prepared by hydrolyzing an azapentadienylidene ammonium salt of the formula ##EQU1##
    Type: Grant
    Filed: September 4, 1973
    Date of Patent: March 16, 1976
    Assignee: Byk Gulden Lomberg Chemische Fabrik GmbH
    Inventors: Kurt Klemm, Erhard Langenscheid