Patents by Inventor Ricarda Prokic-Immel

Ricarda Prokic-Immel 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).

  • O,S-dialkyl-O-(substituted phenyl)-thiolphosphates as pesticides
    Patent number: 4639438
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 which may be identical to or different from each other, are each straight or branched alkyl of 1 to 3 carbon atoms;R.sub.3 is alkyl of 1 to 8 carbon atoms;X is sulfur or oxygen;Y is chlorine, bromine or fluorine; andn is 1 or 2.The compounds are useful as pesticides.
    Type: Grant
    Filed: March 12, 1986
    Date of Patent: January 27, 1987
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Richard Sehring, Wolfgang Buck, Ricarda Prokic-Immel, Sigmund Lust
  • Urea derivatives and pesticidal compositions containing same
    Patent number: 4622340
    Abstract: This invention relates to compounds of the formula ##STR1## Z' is chlorine or fluorine, with the proviso that Z' is chlorine when Q is the moiety of Formula III. The invention also relates to the preparation of the compounds, their use in controlling animal pests in plant protection, and pesticidal agents comprising the compounds as active ingredients.
    Type: Grant
    Filed: April 26, 1984
    Date of Patent: November 11, 1986
    Assignee: Celamerck GmbH & Co., KG
    Inventors: Heinz-Manfred Becher, Ricarda Prokic-Immel, Walter Wirtz
  • N-(2H-Difluoro-3,5-dichloro-phenyl)-N'-(2,6-difluorobenzoyl) urea derivative and pesticidal compositions containing same
    Patent number: 4457943
    Abstract: This invention relates to compounds of the formula ##STR1## wherein ##STR2## X is oxygen or sulfur; Y is chlorine or fluorine; andZ is hydrogen, chlorine, or fluorine,as well as to the preparation thereof, their use in controlling animal pests in plant protection, and pesticidal agents comprising the compounds of Formula I as active ingredients.
    Type: Grant
    Filed: November 16, 1981
    Date of Patent: July 3, 1984
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Heinz-Manfred Becher, Ricarda Prokic-Immel, Walter Wirtz
  • Insecticidal acyl urea derivatives
    Patent number: 4275077
    Abstract: This invention is directed to novel urea derivatives of the general formula ##STR1## wherein A represents one of the groups ##STR2## X and Y, which may be identical to or different from each other, each represent hydrogen, chlorine or bromine;Z represents hydrogen or chlorine;Z' represents chlorine or fluorine; andZ" represents hydrogen, chlorine, or fluorine.The invention is also directed to the production of compounds of Formula I, their use as pesticides, and pesticidal agents comprising the novel compounds as active substances.
    Type: Grant
    Filed: January 8, 1980
    Date of Patent: June 23, 1981
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Heinz-Manfred Becher, Richard Sehring, Walter Wirtz, Ricarda Prokic-Immel
  • 2,5-Dichloro-4-cyano-phenyl esters of thionophosphoric, thionothiolphosphoric and thionophosphonic acids
    Patent number: 4150124
    Abstract: Compounds of the formula ##STR1## WHEREIN R.sub.1 is alkyl of 1 to 3 carbon atoms, andR.sub.2 is alkyl of 1 to 3 carbon atoms, phenyl, alkoxy of 1 to 3 carbon atoms or (alkyl of 1 to 4 carbon atoms)thio;The compounds are useful as insecticides, acaricides and fungicides.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: April 17, 1979
    Assignee: Celamerck GmbH & Co. KG
    Inventors: Richard Sehring, Ricarda Prokic-Immel
  • Derivatives of cyclopropane
    Patent number: 4102910
    Abstract: Compounds of the formula ##STR1## wherein A is oxygen or --NH--, andR is straight or branched alkyl of 2 to 22 carbon atoms or straight or branched alkenyl of 3 to 18 carbon atoms,And acid addition salts thereof; the compounds as well as the salts are useful as acaricides.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: July 25, 1978
    Assignee: Celamerck GmbH & Co. KG.
    Inventors: Walter Ost, Klaus Thomas, Ricarda Prokic-Immel