Patents by Inventor Ritchie Wessling

Ritchie Wessling 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: 9839378
    Abstract: Novel optical devices, methods and systems relating to the detection of glucose, and more particularly to real-time glucose monitoring, are disclosed herein. More particularly, various hardware and methodological means are disclosed for ratiometric correction of optical glucose measurements for artifacts of optical systems.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: December 12, 2017
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: David R. Markle, Ritchie A. Wessling, Donald J. Kolehmainen
  • Patent number: 8983565
    Abstract: Embodiments of the present invention are directed to an optical sensor capable of measuring two analytes simultaneously with a single indicator system. In preferred embodiments, the sensor comprises a fluorescent dye having acid and base forms that facilitate ratiometric pH sensing, wherein the dye is further associated with a glucose binding moiety and configured to generate a signal that varies in intensity with the concentration of glucose.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: March 17, 2015
    Assignee: Medtronic Minimed, Inc.
    Inventors: David R. Markle, Jeff T. Suri, Ritchie A. Wessling, Matthew A. Romey
  • Patent number: 8951503
    Abstract: The present invention concerns an improved optical method and optical sensing device for determining the levels of polyhydroxyl-substituted organic molecules in vitro and/or in vivo in aqueous media. The range of detection is between about 400 and 800 nm. In particular, a sensory devise is implemented in a mammal to determine sugar levels. Specifically, a dye is combined with a conjugated nitrogen-containing heterocyclic aromatic boronic acid-substituted bis-onium compound in the presence of a sugar, such as fructose or glucose. The viologens are preferred as the aromatic conjugated nitrogen-containing boronic acid substituted compounds. The method is useful to determine sugar levels in a human being.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: February 10, 2015
    Assignee: The Regents of the University of California
    Inventors: Bakthan Singaram, Ritchie A. Wessling
  • Patent number: 8940544
    Abstract: Analyte sensors having antioxidant protection are disclosed. By combining antioxidant and/or scavenger agents into polymer matrices that contain sensor moieties, the sensor moieties are protected from reactive oxygen species. Also disclosed are methods of making analyte sensors and methods of inhibiting oxidative degradation of sensing components in hydrated, polymerized analyte sensor systems.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: January 27, 2015
    Assignee: Medtronic Minimed, Inc.
    Inventors: Jeff T. Suri, Ritchie A. Wessling, Thomas A. Peyser, Soya Gamsey, Eric E. Patterson
  • Publication number: 20140350364
    Abstract: Novel optical devices, methods and systems relating to the detection of glucose, and more particularly to real-time glucose monitoring, are disclosed herein. More particularly, various hardware and methodological means are disclosed for ratiometric correction of optical glucose measurements for artifacts of optical systems.
    Type: Application
    Filed: August 7, 2014
    Publication date: November 27, 2014
    Inventors: David R. Markle, Ritchie A. Wessling, Donald J. Kolehmainen
  • Patent number: 8838195
    Abstract: Novel optical devices, methods and systems relating to the detection of glucose, and more particularly to real-time glucose monitoring, are disclosed herein. More particularly, various hardware and methodological means are disclosed for ratiometric correction of optical glucose measurements for artifacts of optical systems.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: September 16, 2014
    Assignee: Medtronic Minimed, Inc.
    Inventors: David R. Markle, Ritchie A. Wessling, Donald J. Kolehmainen
  • Publication number: 20140058225
    Abstract: Embodiments of the present invention are directed to an optical sensor capable of measuring two analytes simultaneously with a single indicator system. In preferred embodiments, the sensor comprises a fluorescent dye having acid and base forms that facilitate ratiometric pH sensing, wherein the dye is further associated with a glucose binding moiety and configured to generate a signal that varies in intensity with the concentration of glucose.
    Type: Application
    Filed: July 25, 2013
    Publication date: February 27, 2014
    Applicant: GluMetrics, Inc.
    Inventors: David R. Markle, Jeff T. Suri, Ritchie A. Wessling, Matthew A. Romey
  • Patent number: 8658795
    Abstract: Novel pyridinium salts functionalized with boronic acid and methods of making them are disclosed. When combined with a fluorescent dye, the compounds are useful in the detection of polyhydroxyl-substituted organic molecules.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: February 25, 2014
    Assignee: Glumetrics, Inc.
    Inventors: Soya Gamsey, Ritchie A. Wessling
  • Patent number: 8498682
    Abstract: Embodiments of the present invention are directed to an optical sensor capable of measuring two analytes simultaneously with a single indicator system. In preferred embodiments, the sensor comprises a fluorescent dye having acid and base forms that facilitate ratiometric pH sensing, wherein the dye is further associated with a glucose binding moiety and configured to generate a signal that varies in intensity with the concentration of glucose.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: July 30, 2013
    Assignee: GluMetrics, Inc.
    Inventors: David R Markle, Jeff T Suri, Ritchie A Wessling, Matthew A Romey
  • Patent number: 8394357
    Abstract: The present invention concerns an improved optical method and optical sensing device for determining the levels of polyhydroxyl-substituted organic molecules in vitro and/or in vivo in aqueous media. The range of detection is between about 400 and 800 nm. In particular, a sensory devise is implemented in a mammal to determine sugar levels. Specifically, a dye is combined with a conjugated nitrogen-containing heterocyclic aromatic boronic acid-substituted bis-onium compound in the presence of a sugar, such as fructose or glucose. The viologens are preferred as the aromatic conjugated nitrogen-containing boronic acid substituted compounds. The method is useful to determine sugar levels in a human being.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: March 12, 2013
    Assignee: The Regents of the University of California
    Inventors: Bakthan Singaram, Ritchie A. Wessling
  • Publication number: 20120282412
    Abstract: In preferred embodiments, the present invention relates to methods for polymerizing a monomer solution within a cavity covered by a porous membrane to generate a smooth polymer surface. More specifically, the method can be used to provide a medical device or sensor with a smooth polymer surface.
    Type: Application
    Filed: January 4, 2012
    Publication date: November 8, 2012
    Inventors: David R. Markle, Huashi Zhang, Matthew A. Romey, Ritchie A. Wessling
  • Publication number: 20120208286
    Abstract: Novel pyridinium salts functionalized with boronic acid and methods of making them are disclosed. When combined with a fluorescent dye, the compounds are useful in the detection of polyhydroxyl-substituted organic molecules.
    Type: Application
    Filed: April 25, 2012
    Publication date: August 16, 2012
    Applicant: GLUMETRICS, INC.
    Inventors: SOYA GAMSEY, RITCHIE A. WESSLING
  • Patent number: 8178676
    Abstract: Novel pyridinium salts functionalized with boronic acid and methods of making them are disclosed. When combined with a fluorescent dye, the compounds are useful in the detection of polyhydroxyl-substituted organic molecules.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: May 15, 2012
    Assignee: Glumetrics, Inc.
    Inventors: Soya Gamsey, Ritchie A. Wessling
  • Patent number: 8110251
    Abstract: In preferred embodiments, the present invention relates to methods for polymerizing a monomer solution within a cavity covered by a porous membrane to generate a smooth polymer surface. More specifically, the method can be used to provide a medical device or sensor with a smooth polymer surface.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: February 7, 2012
    Assignee: Glumetrics, Inc.
    Inventors: David R. Markle, Huashi Zhang, Matthew A. Romey, Ritchie A. Wessling
  • Publication number: 20120009126
    Abstract: The present invention concerns an improved optical method and optical sensing device for determining the levels of polyhydroxyl-substituted organic molecules in vitro and/or in vivo in aqueous media. The range of detection is between about 400 and 800 nm. In particular, a sensory devise is implemented in a mammal to determine sugar levels. Specifically, a dye is combined with a conjugated nitrogen-containing heterocyclic aromatic boronic acid-substituted bis-onium compound in the presence of a sugar, such as fructose or glucose. The viologens are preferred as the aromatic conjugated nitrogen-containing boronic acid substituted compounds. The method is useful to determine sugar levels in a human being.
    Type: Application
    Filed: June 9, 2011
    Publication date: January 12, 2012
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Bakthan SINGARAM, Ritchie A. WESSLING
  • Publication number: 20110236989
    Abstract: Analyte sensors having antioxidant protection are disclosed. By combining antioxidant and/or scavenger agents into polymer matrices that contain sensor moieties, the sensor moieties are protected from reactive oxygen species. Also disclosed are methods of making analyte sensors and methods of inhibiting oxidative degradation of sensing components in hydrated, polymerized analyte sensor systems.
    Type: Application
    Filed: February 7, 2011
    Publication date: September 29, 2011
    Applicant: GLUMETRICS, INC.
    Inventors: JEFF T. SURI, RITCHIE A. WESSLING, THOMAS A. PEYSER, SOYA GAMSEY, ERIC E. PATTERSON
  • Publication number: 20110171742
    Abstract: Novel pyridinium salts functionalized with boronic acid and methods of making them are disclosed. When combined with a fluorescent dye, the compounds are useful in the detection of polyhydroxyl-substituted organic molecules.
    Type: Application
    Filed: March 22, 2011
    Publication date: July 14, 2011
    Applicant: GLUMETRICS, INC.
    Inventors: SOYA GAMSEY, RITCHIE A. WESSLING
  • Patent number: 7968714
    Abstract: The present invention concerns an improved optical method and optical sensing device for determining the levels of polyhydroxyl-substituted organic molecules in vitro and/or in vivo in aqueous media. The range of detection is between about 400 and 800 nm. In particular, a sensory devise is implemented in a mammal to determine sugar levels. Specifically, a dye is combined with a conjugated nitrogen-containing heterocyclic aromatic boronic acid-substituted bis-onium compound in the presence of a sugar, such as fructose or glucose. The viologens are preferred as the aromatic conjugated nitrogen-containing boronic acid substituted compounds. The method is useful to determine sugar levels in a human being.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: June 28, 2011
    Assignee: Regents of the University of California
    Inventors: Bakthan Singaram, Ritchie A. Wessling
  • Patent number: 7939664
    Abstract: Novel pyridinium salts functionalized with boronic acid and methods of making them are disclosed. When combined with a fluorescent dye, the compounds are useful in the detection of polyhydroxyl-substituted organic molecules.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: May 10, 2011
    Assignee: Glumetrics Inc.
    Inventors: Soya Gamsey, Ritchie A. Wessling
  • Patent number: 7829341
    Abstract: The invention relates to a class of glucose-responsive, polyviologen boronic acid quenchers that may be used in combination with fluophores to achieve real-time measurement of glucose levels in vivo.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: November 9, 2010
    Assignee: Glumetrics, Inc.
    Inventors: Soya Gamsey, Ritchie A. Wessling