Patents by Inventor Rudolf Kropp

Rudolf Kropp 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).

  • Substituted pyrazoles
    Patent number: 4008249
    Abstract: New and valuable substituted pyrazoles, herbicides containing these compounds as active ingredients, and a process for controlling the growth of unwanted plants with these compounds.
    Type: Grant
    Filed: February 27, 1975
    Date of Patent: February 15, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Adolf Fischer, deceased, Rudolf Kropp, Franz Reicheneder, deceased
  • Hard copper free dental gold alloys
    Patent number: 4007040
    Abstract: A hard, copper free gold alloy for dental purposes is prepared containing 61 to 85 weight % gold, 8 to 15 weight % platinum, 0 to 4 weight % palladium, 5 to 15 weight % silver and 2 to 5 weight % zinc. 0.05 to 0.1 weight % of the platinum can be replaced by iridium.
    Type: Grant
    Filed: January 27, 1976
    Date of Patent: February 8, 1977
    Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
    Inventor: Rudolf Kropp
  • 4-Amino pyridazinium compounds having pharmacalogical properties
    Patent number: 3980633
    Abstract: New pyridazinium compounds which can be used as intermediates and are of interest because of their pharmacological properties, and their production.The invention relates to new pyridazinium compounds and their production. These compounds are of pharmacological interest.In DOS No. 1,912,941 6-alkoxypyridazinium compounds are said to have valuable pharmacological properties. Furthermore pyridazinium compounds are known for example as starting materials for pesticides and dyes from DOS No. 2,003,461 or U.S. Patent 3,510,488.The quaternization of pyridazines into pyridazinium compounds is described in an article in Acta. Chem. Scand., 21 (1967), 1067 to 1080, and the reaction of 6-chloropyridazinium compounds with amines is described in volume 23 (1969), 2534 to 2536.
    Type: Grant
    Filed: September 12, 1973
    Date of Patent: September 14, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Rudolf Kropp, Franz Reicheneder, August Amann, Hubert Giertz
  • Sympathicomimetic remedy inducing vasopressor effects after oral and parenteral administration
    Patent number: 3975526
    Abstract: Cardiac stimulants and vasopressor agents for peroral and parenteral administration containing 6-alkoxy-pyridazinium compounds as active ingredients.
    Type: Grant
    Filed: June 10, 1974
    Date of Patent: August 17, 1976
    Assignee: Badische Anilin- & Soda-Fabrik Aktiengesellschaft
    Inventors: Franz Reicheneder, Rudolf Kropp, August Amann, Hubert Giertz, Joerg Schuster