Patents by Inventor John Harry Wilkinson

John Harry Wilkinson 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).

  • Processes for preparing pesticidal intermediates
    Patent number: 6133432
    Abstract: A process for preparing a compound of the formula ##STR1## wherein R is C.sub.1 -C.sub.18 alkyl by reacting a compound of the formulaRO.sub.2 C--CH.sub.2 CN (II)with a cyanide salt and formaldehyde or source thereof. Compounds of formula (I) are useful intermediates to pesticidally active compounds.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: October 17, 2000
    Assignee: Rhone-Poulenc Agro
    Inventors: David William Hawkins, David Alan Roberts, John Harry Wilkinson, Jean-Louis Clavel