Patents by Inventor Donald M. Atkinson

Donald M. Atkinson 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).

  • Method of forming fluid filled microcapsules
    Patent number: 4888140
    Abstract: The invention is a process for preparing round, fluid filled microcapsules by the simultaneous extrusion, of core and shell material from coaxially aligned and concentric extrusion nozzles into a surrounding carrier fluid moving in the direction of the extrusion wherein a surfactant having affinity with the carrier fluid is added to the carrier fluid.When the carrier fluid is an oil based carrier, a lipophilic emulsifier such as a sorbitan monoester of a fatty acid can be used.
    Type: Grant
    Filed: February 11, 1987
    Date of Patent: December 19, 1989
    Assignee: Chesebrough-Pond's Inc.
    Inventors: Herman W. Schlameus, Chel W. Lew, Donald M. Atkinson