Patents by Inventor Robert N. Wilke

Robert N. Wilke 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).

  • Patent number: 4309422
    Abstract: This invention discloses new insecticidal compounds of the formula ##STR1## wherein X.sup.1 and X.sup.2 are each independently selected from the group consisting of oxygen and sulfur; R.sup.1 is alkyl; R.sup.2 is selected from the group consisting of alkyl, alkoxy and alkylthio; Y is a straight or branched hydrocarbon chain of from 1 to 5 carbon atoms; Z is selected from the group consisting of alkyl, alkenyl, alkoxy, alkylthio, halogen, haloalkyl and nitro; and n is an integer from 0 to 5.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: January 5, 1982
    Assignee: Velsicol Chemical Corporation
    Inventors: Leonard J. Stach, Robert N. Wilke
  • Patent number: 4073894
    Abstract: This invention discloses new compounds of the formula ##STR1## wherein R.sup.1 and R.sup.2 are independently selected from the group consisting of alkyl and ##STR2## WHEREIN A is selected from the group consisting of alkyl, alkoxy, alkylthio, halogen, nitro and cyano; and n is an integer from 0 to 3; X.sup.1, X.sup.2, X.sup.3, Z.sup.1 and Z.sup.2 are independently selected from the group consisting of oxygen and sulfur; m is the integer 0 or 1; and Y is selected from the group consisting of alkyl, alkoxy, alkylthio, amino, alkylamino and dialkylamino. Further disclosed are insecticidal compositions containing as an essential ingredient a compound of the foregoing description.
    Type: Grant
    Filed: November 17, 1976
    Date of Patent: February 14, 1978
    Assignee: Velsicol Chemical Corporation
    Inventors: Leonard J. Stach, Robert N. Wilke
  • Patent number: 3959478
    Abstract: This invention discloses chemical compounds having the following structural formula ##SPC1##Wherein X is chlorine or fluorine; n is an integer from 1 to 3; and Y is chlorine, bromine or fluorine. The compounds of the above description are useful as insecticides.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: May 25, 1976
    Assignee: Velsicol Chemical Corporation
    Inventors: Sidney B. Richter, Leonard J. Stach, Robert N. Wilke