Patents by Inventor Jan J. van Daalen

Jan J. van Daalen 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).

  • 1,3,4-Substituted pyrazoline derivatives
    Patent number: 4174393
    Abstract: The invention relates to novel 1,3,4-substituted-.DELTA..sup.2 -pyrazolines having an insecticidal activity. The compounds are particularly active against larvae of insects for example larvae of Colorado beetle, cabbage white butterfly and yellow-fever mosquito. On the basis of their activity, the compounds, after having been processed to the usual composition, may be used in controlling insects, particularly in the field of agriculture and horticulture. The dosage is 0.05 -1 kg of the active substance per hectare.
    Type: Grant
    Filed: January 5, 1977
    Date of Patent: November 13, 1979
    Assignee: Duphar International Research B.V.
    Inventors: Jan J. Van Daalen, Rudolf Mulder
  • Pyrazoline compounds
    Patent number: 4156007
    Abstract: The invention relates to new 1,3,4-substituted .DELTA..sup.2 -pyrazolines having an insecticidal activity. The compounds are active in particular against larvae of insects such as larvae of colorado beetle, cabbage butterfly and yellow-fever mosquito. On the basis of their activity the compounds, after having been processed to the usual compositions, may be used in controlling insects, in particular in the field of agriculture and horticulture. The dosage is 0.05-1 kg of the active substance per hectare. A most active compound is the substance 1-(4-chlorophenylcarbamoyl)-3-(4-chlorophenyl)-4-phenyl-.DELTA..sup.2 -pyrazoline.
    Type: Grant
    Filed: September 26, 1977
    Date of Patent: May 22, 1979
    Assignee: U.S. Philips Corporation
    Inventors: Jan J. van Daalen, Rudolf Mulder