Patents by Inventor Ioanis Katakis

Ioanis Katakis 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).

  • Biosensor including chemically modified enzymes
    Patent number: 5543326
    Abstract: Oxidoreductases are chemically modified so as to change their net charge at a given pH. Through such modification the adsorption of the enzymes on surfaces, their retention in similarly or oppositely charged polymer membranes and their binding with similarly or oppositely charged macromolecules, particularly redox macromolecules, is controlled. The modified enzymes, of which modified recombinant glucose oxidase is an example, are useful in biosensors, e.g. for glucose; as marker enzymes of antigens or antibodies in immunosensing; and as labels of nucleotide sequences in probes, e.g. for DNA nucleotide sequences.
    Type: Grant
    Filed: March 4, 1994
    Date of Patent: August 6, 1996
    Inventors: Adam Heller, Ioanis Katakis, Ling Ye
  • Enzyme electrodes
    Patent number: 5264105
    Abstract: An improved enzyme electrode includes a three-dimensional redox polymer network having redox enzymes bound thereto, and also having a protein excluding polymeric coating.
    Type: Grant
    Filed: March 17, 1993
    Date of Patent: November 23, 1993
    Inventors: Brian A. Gregg, Adam Heller, Wolfgang Kerner, Michael V. Pishko, Ioanis Katakis
  • Enzyme electrodes
    Patent number: 5264104
    Abstract: An improved enzyme electrode includes a three-dimensional redox polymer network having redox enzymes bound thereto, and also having a protein excluding polymeric coating.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: November 23, 1993
    Inventors: Brian A. Gregg, Adam Heller, Wolfgang Kerner, Michael V. Pishko, Ioanis Katakis