Patents by Inventor Ratnakar Vejella

Ratnakar Vejella 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).

  • Analyte sensors having nanostructured electrodes and methods for making and using them
    Patent number: 9309550
    Abstract: Embodiments of the invention provide analyte sensors having nanostructured electrodes as well as methods for making and using such sensors. In certain embodiments of the invention, the sensor includes a carbon nanotube electrode and a analyte limiting membrane that modulates the ability of a analyte to contact the carbon nanotube electrode.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: April 12, 2016
    Assignee: Medtronic MiniMed, Inc.
    Inventors: Kenneth W. Cooper, Ratnakar Vejella, Gopikrishnan Soundararajan, Rajiv Shah
  • System and method for determining the point of hydration and proper time to apply potential to a glucose sensor
    Patent number: 8608924
    Abstract: According to an embodiment of the invention, a method of determining hydration of a sensor having a plurality of electrodes is disclosed. In particular embodiments, the method couples a sensor electronics device to the sensor and measures the open circuit potential between at least two of the plurality of electrodes. Then, the open circuit potential measurement is compared to a predetermined value. In some embodiments, the plurality of electrodes includes a working electrode, a reference electrode, and a counter electrode. In still further embodiments, the open circuit potential between the working electrode and the reference electrode is measured. In other embodiments, the open circuit potential between the working electrode and the counter electrode is measured. In still other embodiments, the open circuit potential between the counter electrode and the reference electrode is measured.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: December 17, 2013
    Assignee: Medtronic Minimed, Inc.
    Inventors: Kenneth W. Cooper, David Y. Choy, Rajiv Shah, Gopikrishnan Soundararajan, Ratnakar Vejella
  • System and Method for Determining the Point of Hydration and Proper Time to Apply Potential to a Glucose Sensor
    Publication number: 20130311103
    Abstract: According to an embodiment of the invention, a method of determining hydration of a sensor having a plurality of electrodes is disclosed. In particular embodiments, the method couples a sensor electronics device to the sensor and measures the open circuit potential between at least two of the plurality of electrodes. Then, the open circuit potential measurement is compared to a predetermined value. In some embodiments, the plurality of electrodes includes a working electrode, a reference electrode, and a counter electrode. In still further embodiments, the open circuit potential between the working electrode and the reference electrode is measured. In other embodiments, the open circuit potential between the working electrode and the counter electrode is measured. In still other embodiments, the open circuit potential between the counter electrode and the reference electrode is measured.
    Type: Application
    Filed: July 25, 2013
    Publication date: November 21, 2013
    Applicant: MEDTRONIC MINIMED, INC.
    Inventors: Kenneth W. Cooper, David Y. Choy, Rajiv Shah, Gopikrishnan Soundararajan, Ratnakar Vejella
  • SYSTEM AND METHOD FOR DETERMINING THE POINT OF HYDRATION AND PROPER TIME TO APPLY POTENTIAL TO A GLUCOSE SENSOR
    Publication number: 20120088996
    Abstract: According to an embodiment of the invention, a method of determining hydration of a sensor having a plurality of electrodes is disclosed. In particular embodiments, the method couples a sensor electronics device to the sensor and measures the open circuit potential between at least two of the plurality of electrodes. Then, the open circuit potential measurement is compared to a predetermined value. In some embodiments, the plurality of electrodes includes a working electrode, a reference electrode, and a counter electrode. In still further embodiments, the open circuit potential between the working electrode and the reference electrode is measured. In other embodiments, the open circuit potential between the working electrode and the counter electrode is measured. In still other embodiments, the open circuit potential between the counter electrode and the reference electrode is measured.
    Type: Application
    Filed: December 16, 2011
    Publication date: April 12, 2012
    Applicant: MEDTRONIC MINIMED, INC.
    Inventors: KENNETH W. COOPER, David Y. Choy, Rajiv Shah, Gopikrishnan Soundararajan, Ratnakar Vejella
  • System and method for determining the point of hydration and proper time to apply potential to a glucose sensor
    Patent number: 8114269
    Abstract: According to an embodiment of the invention, a method of determining hydration of a sensor having a plurality of electrodes is disclosed. In particular embodiments, the method couples a sensor electronics device to the sensor and measures the open circuit potential between at least two of the plurality of electrodes. Then, the open circuit potential measurement is compared to a predetermined value. In some embodiments, the plurality of electrodes includes a working electrode, a reference electrode, and a counter electrode. In still further embodiments, the open circuit potential between the working electrode and the reference electrode is measured. In other embodiments, the open circuit potential between the working electrode and the counter electrode is measured. In still other embodiments, the open circuit potential between the counter electrode and the reference electrode is measured.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: February 14, 2012
    Assignee: Medtronic Minimed, Inc.
    Inventors: Kenneth W. Cooper, David Y. Choy, Rajiv Shah, Gopikrishnan Soundararajan, Ratnakar Vejella
  • ANALYTE SENSORS HAVING NANOSTRUCTURED ELECTRODES AND METHODS FOR MAKING AND USING THEM
    Publication number: 20090198117
    Abstract: Embodiments of the invention provide analyte sensors having nanostructured electrodes as well as methods for making and using such sensors. In certain embodiments of the invention, the sensor includes a carbon nanotube electrode and a analyte limiting membrane that modulates the ability of a analyte to contact the carbon nanotube electrode.
    Type: Application
    Filed: January 28, 2009
    Publication date: August 6, 2009
    Applicant: MEDTRONIC MINIMED, INC.
    Inventors: Kenneth W. Cooper, Ratnakar Vejella, Gopikrishnan Soundararajan, Rajiv Shah
  • System and Method for Determining the Point of Hydration and Proper Time to Apply Potential to a Glucose Sensor
    Publication number: 20080156661
    Abstract: According to an embodiment of the invention, a method of determining hydration of a sensor having a plurality of electrodes is disclosed. In particular embodiments, the method couples a sensor electronics device to the sensor and measures the open circuit potential between at least two of the plurality of electrodes. Then, the open circuit potential measurement is compared to a predetermined value. In some embodiments, the plurality of electrodes includes a working electrode, a reference electrode, and a counter electrode. In still further embodiments, the open circuit potential between the working electrode and the reference electrode is measured. In other embodiments, the open circuit potential between the working electrode and the counter electrode is measured. In still other embodiments, the open circuit potential between the counter electrode and the reference electrode is measured.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 3, 2008
    Applicant: MEDTRONIC MINIMED, INC.
    Inventors: Kenneth W. Cooper, David Y. Choy, Rajiv Shah, Gopikrishnan Soundararajan, Ratnakar Vejella