Patents by Inventor Karen M. McCoy

Karen M. McCoy 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: 4950596
    Abstract: The subject invention concerns a process for stabilizing intact or ruptured microbial cells having glucose isomerase associated therewith. Specifically exemplified is a process for stabilizing glucose isomerase producing cells of a microorganism belonging to the genus Ampullariella. In the invention process the whole or ruptured microbial cells are contacted with a partially carboxyalkylated- or partially phosphonoalkylated-cationic polyelectrolyte, for example, a partially carboxymethylated polyethyleneimine to flocculate and stabilize the cells. The flocculated cells are further stabilized by encapsulation with a partially carboxyalkylated- or partially phosphonoalkylated-cationic polyelectrolyte. The encapsulation can be done prior to or after the flocculated cells are crosslinked. The net effect is manifested by a dramatic increase in the half-life of the glucose isomerase.
    Type: Grant
    Filed: March 2, 1987
    Date of Patent: August 21, 1990
    Assignee: The Dow Chemical Company
    Inventors: Roberta C. Cheng, Norman G. Moll, Robert A. Houtchens, Karen M. McCoy
  • Patent number: 4859599
    Abstract: Antibiotic A26201-1 and antibiotic A26201-2 are produced by the novel microorganism, Actinoplanes species A26201 (ATCC 39573), under aqueous aerobic fermentation conditions. The antibiotics are useful for inhibiting bacteria, particularly gram positive bacteria, and are also useful for promoting the growth of monogastric and ruminant animals.
    Type: Grant
    Filed: August 8, 1986
    Date of Patent: August 22, 1989
    Assignee: The Dow Chemical Company
    Inventors: Joseph W. Whalen, Gregory L. Swartz, Lisa J. Rheaume, Karen M. McCoy
  • Patent number: 4735939
    Abstract: A method for inhibiting insects by contacting insects or habitat thereof with an effective amount of staurosporine.
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: April 5, 1988
    Assignee: The Dow Chemical Company
    Inventors: Karen M. McCoy, Christopher J. Hatton
  • 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
  • Patent number: 4613503
    Abstract: Antibiotic A26201-1 and antibiotic A26201-2 are produced by the novel microorganism, Actinoplanes species A26201 (ATCC 39573), under aqueous aerobic fermentation conditions. The antibiotics are useful for inhibiting bacteria, particularly gram positive bacteria, and are also useful for promoting the growth of monogastric and ruminant animals.
    Type: Grant
    Filed: October 11, 1984
    Date of Patent: September 23, 1986
    Assignee: The Dow Chemical Company
    Inventors: Joseph W. Whalen, Gregory L. Swartz, Lisa J. Rheaume, Karen M. McCoy