Patents by Inventor Dale Gordon Brown

Dale Gordon Brown 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).

  • Process for the preparation of m-phenoxybenzaldehyde
    Patent number: 4108904
    Abstract: This is a novel process for the preparation of m-phenoxybenzaldehyde, a useful and valuable intermediate for the synthesis of pyrethroid type pesticides. The process comprises halogenation of m-phenoxytoluene on the side chain, in an inert solvent and in the presence of free radical initiators or strong light to a mixture of the corresponding mono and dihalo derivatives, and conversion of the mixture to m-phenoxybenzaldehyde by a Sommelet-type reaction.
    Type: Grant
    Filed: September 22, 1976
    Date of Patent: August 22, 1978
    Assignee: American Cyanamid Company
    Inventors: Dale Gordon Brown, William Wayne Brand