Patents by Inventor Hal C. Purcell

Hal C. Purcell 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: 6007823
    Abstract: A process for the isolation of simmondsins from jojoba meal is disclosed. Simmondsins are first extracted from defatted jojoba meal with water. After separation from the meal, this water extract is subsequently dried, leaving the simmondsins in the resulting solid. The simmondsins may then be preferentially extracted from the dried water extract by contact with a first ethanolic solvent, forming a first solvent fraction containing simmondsins therein. The first solvent fraction, which is a substantially protein-free concentrate of simmondsins, may be separated from the solid phase, and the ethanolic solvent may then be readily removed, for example, by drying. Residual simmondsins remaining in the meal following extraction with the first ethanolic solvent may also be recovered by a second extraction with ethanolic solvent.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: December 28, 1999
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Thomas P. Abbott, Brian J. Plattner, Hal C. Purcell