Patents by Inventor Carol C. Epstein

Carol C. Epstein 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).

  • Stabilization of glucose isomerase
    Patent number: 4675292
    Abstract: Extracellular enzymes are stabilized with a carboxyalkylated or phosphonoalkylated polymer having a molecular weight of at least 500 Daltons. Exemplified is the stabilization of the enzyme glucose isomerase used in a process to convert D-glucose to D-fructose. In a preferred embodiment of the invention the feedstream containing the substrate is contacted initially with the stabilizer and then with the enzyme. In this system the stabilizer and enzyme are maintained in separate reactors. This separation, advantageously, results in a higher half-life for the enzyme.
    Type: Grant
    Filed: March 4, 1985
    Date of Patent: June 23, 1987
    Assignee: The Dow Chemical Company
    Inventors: Robert A. Houtchens, Roberta C. Cheng, Karen M. McCoy, Carol C. Epstein, Norman G. Moll
  • Isomerization of glucose to fructose using glucose isomerase from ampullariella
    Patent number: 4308349
    Abstract: The production of a heat stable glucose isomerase from a microorganism belonging to the genus Ampullariella and a method for using the isomerase to convert glucose to fructose.
    Type: Grant
    Filed: March 9, 1978
    Date of Patent: December 29, 1981
    Assignee: The Dow Chemical Company
    Inventors: Sharonkay E. Foley, Patrick J. Oriel, Carol C. Epstein