Patents by Inventor Sandra Kea

Sandra Kea 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).

  • Separation and purification of sugar esters synthesized from both aqueous and nonaqueous systems
    Patent number: 4710567
    Abstract: Sugar esters are separated and purified by forming an aqueous mixture containing salt from which water is distilled off to remove unreacted volatile material from the raw sugar esters. Thereafter an organic extraction solvent is mixed into the aqueous mixture which upon standing separates into a plurality of layers containing sugar esters of different degrees of substitution which are recovered from the separated layers. The separated sugar esters may be further refined by mixing with water and by freeze drying the aqueous mixture.
    Type: Grant
    Filed: June 4, 1985
    Date of Patent: December 1, 1987
    Assignee: Nebraska Department of Economic Development, State of Nebraska
    Inventors: Sandra Kea, Charles E. Walker
  • Sugar esters and an improved anhydrous method of manufacture
    Patent number: 4683299
    Abstract: The invention relates to an improved process for the synthesis of sugar esters carried out in a substantially anhydrous system and in the presence of an organic acid chloride. Any of the known available sugars may be used and in particular hydrolyzate sugars derived from starch are effectively employed in accordance with the present invention to produce sugar esters having superior emulsifying characteristics for use as an ingredient in food products for human consumption.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: July 28, 1987
    Assignee: Nebraska Department of Economic Development
    Inventors: Sandra Kea, Charles E. Walker, Eric Kline