Patents by Inventor Rodica Duma

Rodica Duma 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).

  • Direct electron transfer using enzymes in bioanodes, biocathodes, and biofuel cells
    Patent number: 8415059
    Abstract: Bioanodes, biocathodes, and biofuel cells comprising an electron conductor, at least one anode enzyme or cathode enzyme, and an enzyme immobilization material. The anode enzyme is capable of reacting with a fuel fluid to produce an oxidized form of the fuel fluid, and capable of releasing electrons to the electron conductor. The cathode enzyme is capable of reacting with an oxidant to produce water, and capable of gaining electrons from the electron conductor. The enzyme immobilization material for both the anode enzyme and the cathode enzyme is capable of immobilizing and stabilizing the enzyme, and is permeable to the fuel fluid and/or the oxidant.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: April 9, 2013
    Assignee: St. Louis University
    Inventors: Shelley D. Minteer, Becky L. Treu, Rodica Duma
  • DIRECT ELECTRON TRANSFER USING ENZYMES IN BIOANODES, BIOCATHODES, AND BIOFUEL CELLS
    Publication number: 20110014549
    Abstract: Bioanodes, biocathodes, and biofuel cells comprising an electron conductor, at least one anode enzyme or cathode enzyme, and an enzyme immobilization material. The anode enzyme is capable of reacting with a fuel fluid to produce an oxidized form of the fuel fluid, and capable of releasing electrons to the electron conductor. The cathode enzyme is capable of reacting with an oxidant to produce water, and capable of gaining electrons from the electron conductor. The enzyme immobilization material for both the anode enzyme and the cathode enzyme is capable of immobilizing and stabilizing the enzyme, and is permeable to the fuel fluid and/or the oxidant.
    Type: Application
    Filed: November 2, 2006
    Publication date: January 20, 2011
    Applicant: ST. LOUIS UNIVERSITY
    Inventors: Shelley D. Minteer, Becky L. Treu, Rodica Duma
  • DIRECT ELECTRON TRANSFER USING ENZYMES IN BIOANODES, BIOCATHODES, AND BIOFUEL CELLS
    Publication number: 20090305113
    Abstract: Bioanodes, biocathodes, and biofuel cells comprising an electron conductor, at least one anode enzyme A) or cathode enzyme, and an enzyme immobilization material. The anode enzyme is capable of reacting with a fuel fluid to produce an oxidized form of the fuel fluid, and capable of releasing electrons to the electron conductor. The cathode enzyme is capable of reacting with an oxidant to produce water, and capable of gaining electrons from the electron conductor. The enzyme immobilization material for both the anode enzyme and the cathode enzyme is capable of immobilizing and stabilizing the enzyme, and is permeable to the fuel fluid and/or the oxidant.
    Type: Application
    Filed: November 2, 2006
    Publication date: December 10, 2009
    Applicant: ST. LOUIS UNIVERSITY
    Inventors: Shelley D. Minteer, Becky L. Treu, Rodica Duma
  • ENZYMES IMMOBILIZED IN HYDROPHOBICALLY MODIFIED POLYSACCHARIDES
    Publication number: 20090136827
    Abstract: Bioanodes, biocathodes, biofuel cells, immobilized enzymes and immobilization materials comprising a micellar hydrophobically modified polysaccharide are disclosed. In particular, the micellar hydrophobically modified polysaccharide can be a hydrophobically modified chitosan or a hydrophobically modified alginate.
    Type: Application
    Filed: November 2, 2006
    Publication date: May 28, 2009
    Applicant: ST. LOUIS UNIVERSITY
    Inventors: Shelley D. Minteer, Tamara L. Klotzbach, Rodica Duma