Patents by Inventor Dudley K. Erb

Dudley K. Erb 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 o-phthalaldehydes
    Patent number: 5107032
    Abstract: A process for the preparation of o-phthalaldehydes is disclosed comprising the steps of (1) halogenating an o-xylene and (2) hydrolysis of the resulting tetrahalogeno-o-xylene.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: April 21, 1992
    Assignee: Noramco, Inc.
    Inventors: Dudley K. Erb, Janet E. Goldstein