Patents by Inventor Bonnie C. Dalzell

Bonnie C. Dalzell 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: 5711868
    Abstract: A solid state, multi-use electrochemical sensor having an electrically nonconductive substrate, a working electrode, and a semi-permeable membrane covering the working electrode. The working electrode includes an electrically conductive material adhered to a portion of the substrate. A first portion of the conductive material is covered with an electrically insulating dielectric coating, and a second portion of the conductive material is covered with an active layer. The active layer includes a catalytically active quantity of an enzyme carried by platinized carbon powder particles, which are distributed throughout the active layer. A sensor package for incorporating a sensor is provided.
    Type: Grant
    Filed: September 15, 1995
    Date of Patent: January 27, 1998
    Assignee: Chiron Diagnostics Corporatiion
    Inventors: Thomas C. Maley, Paul A. D'Orazio, Bonnie C. Dalzell, Peter G. Edelman, James E. Flaherty, Richard W. Mason, Robert R. McCaffrey
  • Patent number: 5667983
    Abstract: It has been found that imidazole and related buffers enhance the activity of certain preservatives, for example either (1) a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one or (2) 5-bromo-5-nitro-1,3-dioxane, that are used in clinical diagnostic reagents. It has also been found that these buffers and certain surfactants, such as BRIJ 700 and related hydrophilic surfactants, enhance the precision and accuracy of enzyme biosensors.
    Type: Grant
    Filed: October 24, 1994
    Date of Patent: September 16, 1997
    Assignee: Chiron Diagnostics Corporation
    Inventors: Allison L. Abel, Paul A. D'Orazio, Bonnie C. Dalzell, Robert R. McCaffrey, Laura S. Uretsky
  • Patent number: 5601694
    Abstract: A solid shale, multi-use electrochemical sensor having an electrically nonconductive substrate, a working electrode, and a semi-permeable membrane covering the working electrode. The working electrode includes an electrically conductive material adhered to a portion of the substrate. A first portion of the conductive material is covered with an electrically insulating dielectric coating, and a second portion of the conductive material is covered with an active layer. The active layer includes a catalytically active quantity of an enzyme carried by platinized carbon powder particles, which are distributed throughout the active layer. A sensor package for incorporating a sensor is provided.
    Type: Grant
    Filed: July 27, 1995
    Date of Patent: February 11, 1997
    Assignee: Ciba Corning Diagnostics Corp.
    Inventors: Thomas C. Maley, Paul A. D'Orazio, Bonnie C. Dalzell, Peter G. Edelman, James E. Flaherty, Richard W. Mason, Robert R. McCaffrey
  • Patent number: 5573647
    Abstract: A solid state, multi-use electrochemical sensor having an electrically nonconductive substrate, a working electrode, and a semi-permeable membrane covering the working electrode. The working electrode includes an electrically conductive material adhered to a portion of the substrate. A first portion of the conductive material is covered with an electrically insulating dielectric coating, and a second portion of the conductive material is covered with an active layer. The active layer includes a catalytically active quantity of an enzyme carried by platinized carbon powder particles, which are distributed throughout the active layer. A sensor package for incorporating a sensor is provided.
    Type: Grant
    Filed: September 15, 1995
    Date of Patent: November 12, 1996
    Assignee: Ciba Corning Diagnostics Corp.
    Inventors: Thomas C. Maley, Mark W. Boden, Paul A. D'Orazio, Bonnie C. Dalzell, Peter G. Edelman, James E. Flaherty, Robert B. Green, Steven C. Lepke, Richard W. Mason, Robert R. McCaffrey, John A. Zalenski
  • Patent number: 5529676
    Abstract: A solid state, multi-use electrochemical sensor having an electrically nonconductive substrate, a working electrode, and a semi-permeable membrane covering the working electrode. The working electrode includes an electrically conductive material adhered to a portion of the substrate. A first portion of the conductive material is covered with an electrically insulating dielectric coating, and a second portion of the conductive material is covered with an active layer. The active layer includes a catalytically active quantity of an enzyme carried by platinized carbon powder particles, which are distributed throughout the active layer. A sensor package for incorporating a sensor is provided.
    Type: Grant
    Filed: September 15, 1995
    Date of Patent: June 25, 1996
    Assignee: Ciba Corning Diagnostics Corp.
    Inventors: Thomas C. Maley, Mark W. Boden, Paul A. D'Orazio, Bonnie C. Dalzell, Peter G. Edelman, James E. Flaherty, Robert B. Green, Steven C. Lepke, Richard W. Mason, Robert R. McCaffrey, John A. Zalenski
  • Patent number: 5494562
    Abstract: A solid state, multi-use electrochemical sensor having an electrically nonconductive substrate, a working electrode, and a semi-permeable membrane covering the working electrode. The working electrode includes an electrically conductive material adhered to a portion of the substrate. A first portion of the conductive material is covered with an electrically insulating dielectric coating, and a second portion of the conductive material is covered with an active layer. The active layer includes a catalytically active quantity of an enzyme carried by platinized carbon powder particles, which are distributed throughout the active layer. A sensor package for incorporating a sensor is provided.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: February 27, 1996
    Assignee: Ciba Corning Diagnostics Corp.
    Inventors: Thomas C. Maley, Paul A. D'Orazio, Bonnie C. Dalzell, Peter G. Edelman, James E. Flaherty, Richard W. Mason, Robert R. McCaffrey