Patents by Inventor Georgeta Lica

Georgeta Lica 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).

  • Publication number: 20190254574
    Abstract: The present invention provides an electrochemical sensor that employs multiple electrode areas that are exposed for contact with a body fluid, e.g., when the sensor is inserted subcutaneously into a patient's skin. The exposed electrode areas are arranged symmetrically, such that a symmetrical potential distribution is produced when an AC signal is applied to the sensor. The sensors in accordance with these teachings can advantageously be used with AC signals to determine characteristics of the sensor and thus improve sensor performance. These teachings also provide a biocompatible sensor with multiple reference electrode areas that are exposed for contact with body fluid.
    Type: Application
    Filed: May 3, 2019
    Publication date: August 22, 2019
    Inventors: Harvey Buck, Georgeta Lica, Karl-Heinz Koelker, Ewald Rieger
  • Patent number: 10349878
    Abstract: The present invention provides an electrochemical sensor that employs multiple electrode areas that are exposed for contact with a body fluid, e.g., when the sensor is inserted subcutaneously into a patient's skin. The exposed electrode areas are arranged symmetrically, such that a symmetrical potential distribution is produced when an AC signal is applied to the sensor. The sensors in accordance with these teachings can advantageously be used with AC signals to determine characteristics of the sensor and thus improve sensor performance. These teachings also provide a biocompatible sensor with multiple reference electrode areas that are exposed for contact with body fluid.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: July 16, 2019
    Assignee: Roche Diabetes Care, Inc.
    Inventors: Harvey Buck, Georgeta Lica, Karl-Heinz Koelker, Ewald Rieger
  • Publication number: 20170367628
    Abstract: The present invention provides an electrochemical sensor that employs multiple electrode areas that are exposed for contact with a body fluid, e.g., when the sensor is inserted subcutaneously into a patient's skin. The exposed electrode areas are arranged symmetrically, such that a symmetrical potential distribution is produced when an AC signal is applied to the sensor. The sensors in accordance with these teachings can advantageously be used with AC signals to determine characteristics of the sensor and thus improve sensor performance. These teachings also provide a biocompatible sensor with multiple reference electrode areas that are exposed for contact with body fluid.
    Type: Application
    Filed: September 11, 2017
    Publication date: December 28, 2017
    Inventors: Harvey Buck, Georgeta Lica, Karl-Heinz Koelker, Ewald Rieger
  • Patent number: 9757060
    Abstract: The present invention provides an electrochemical sensor that employs multiple electrode areas that are exposed for contact with a body fluid, e.g., when the sensor is inserted subcutaneously into a patient's skin. The exposed electrode areas are arranged symmetrically, such that a symmetrical potential distribution is produced when an AC signal is applied to the sensor. The sensors in accordance with these teachings can advantageously be used with AC signals to determine characteristics of the sensor and thus improve sensor performance. These teachings also provide a biocompatible sensor with multiple reference electrode areas that are exposed for contact with body fluid.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: September 12, 2017
    Assignee: Roche Diabetes Care, Inc.
    Inventors: Harvey Buck, Georgeta Lica, Karl-Heinz Koelker, Ewald Rieger
  • Publication number: 20150320345
    Abstract: The present invention provides an electrochemical sensor that employs multiple electrode areas that are exposed for contact with a body fluid, e.g., when the sensor is inserted subcutaneously into a patient's skin. The exposed electrode areas are arranged symmetrically, such that a symmetrical potential distribution is produced when an AC signal is applied to the sensor. The sensors in accordance with these teachings can advantageously be used with AC signals to determine characteristics of the sensor and thus improve sensor performance. These teachings also provide a biocompatible sensor with multiple reference electrode areas that are exposed for contact with body fluid.
    Type: Application
    Filed: July 20, 2015
    Publication date: November 12, 2015
    Inventors: Harvey Buck, Georgeta Lica, Karl-Heinz Koelker, Ewald Rieger
  • Patent number: 9084570
    Abstract: The present invention provides an electrochemical sensor that employs multiple electrode areas that are exposed for contact with a body fluid, e.g., when the sensor is inserted subcutaneously into a patient's skin. The exposed electrode areas are arranged symmetrically, such that a symmetrical potential distribution is produced when an AC signal is applied to the sensor. The sensors in accordance with these teachings can advantageously be used with AC signals to determine characteristics of the sensor and thus improve sensor performance. These teachings also provide a biocompatible sensor with multiple reference electrode areas that are exposed for contact with body fluid.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: July 21, 2015
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Harvey Buck, Georgeta Lica, Karl-Heinz Koelker, Ewald Rieger
  • Patent number: 8691075
    Abstract: The blood glucose analysis technique and system described herein address the issue of hematocrit interference when rapidly detecting glucose concentrations. It addresses this issue by using a differential pulse voltammetry technique in which short high, frequency voltage pulses are applied to keep the diffusion layer within the reagent of the working electrode, and the pulses are applied in a limited voltage window (or range) that is below the peak, diffusion-limited current. The readings below the peak are then used to determine glucose concentrations. With this technique, glucose concentrations can be determined relatively fast (e.g., within 5 seconds) and independently of the hematocrit levels of the fluid being analyzed.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: April 8, 2014
    Assignee: Roche Diagnostics Operations, Inc.
    Inventor: Georgeta Lica
  • Publication number: 20120088993
    Abstract: The present invention provides an electrochemical sensor that employs multiple electrode areas that are exposed for contact with a body fluid, e.g., when the sensor is inserted subcutaneously into a patient's skin. The exposed electrode areas are arranged symmetrically, such that a symmetrical potential distribution is produced when an AC signal is applied to the sensor. The sensors in accordance with these teachings can advantageously be used with AC signals to determine characteristics of the sensor and thus improve sensor performance. These teachings also provide a biocompatible sensor with multiple reference electrode areas that are exposed for contact with body fluid.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 12, 2012
    Inventors: Harvey Buck, Georgeta Lica, Karl-Heinz Koelker, Ewald Rieger
  • Publication number: 20110168575
    Abstract: One aspect concerns a technique for detecting analyte concentrations, such as glucose concentrations, in blood or other bodily fluids. This technique utilizes an electrochemical test strip that includes a mediator system that generates a linear faradic response at relatively low applied potential differences. An alternating current excitation signal is applied to blood in the test strip. The alternating current excitation signal includes a low frequency signal and a high frequency signal that has a higher frequency than the low frequency signal. The glucose concentration is determined by measuring a low frequency response to the low frequency signal, measuring a high frequency response to the high frequency signal, estimating the glucose concentration based on the low frequency response, and correcting the glucose concentration for one or more error-causing variables based on the high frequency response.
    Type: Application
    Filed: January 8, 2010
    Publication date: July 14, 2011
    Applicant: Roche Diaagnostics Operations, Inc.
    Inventors: Georgeta Lica, Harvey B. Buck, Henning Groll
  • Publication number: 20110155588
    Abstract: The blood glucose analysis technique and system described herein address the issue of hematocrit interference when rapidly detecting glucose concentrations. It addresses this issue by using a differential pulse voltammetry technique in which short high, frequency voltage pulses are applied to keep the diffusion layer within the reagent of the working electrode, and the pulses are applied in a limited voltage window (or range) that is below the peak, diffusion-limited current. The readings below the peak are then used to determine glucose concentrations. With this technique, glucose concentrations can be determined relatively fast (e.g., within 5 seconds) and independently of the hematocrit levels of the fluid being analyzed.
    Type: Application
    Filed: December 30, 2009
    Publication date: June 30, 2011
    Inventor: Georgeta Lica