Patents by Inventor Raeann Gifford
Raeann Gifford 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).
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Patent number: 10585059Abstract: An electrochemical test sensor for detecting the concentration of an analyte in a fluid sample. The electrochemical test sensor includes a housing that has a first end and a second opposing end. The housing includes an opening at the first end to receive a fluid test sample. An electrode assembly includes a substrate, a working electrode, a counter electrode and a reagent. The substrate has a first surface and an opposing second surface. The working electrode is disposed on the first surface of the substrate, and the counter electrode is disposed on the second surface of the substrate. The electrode assembly is positioned within the housing to define a reaction channel. The electrochemical test sensor may be used with a removable lancet mechanism or integrated within a lancet mechanism to form one integral unit.Type: GrantFiled: December 18, 2017Date of Patent: March 10, 2020Assignee: Ascensia Diabetes Care Holdings AGInventors: Yuan Wang, Raeann Gifford, Hualin Jiang, Jeffery S. Reynolds, Jiangfeng Fei
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Patent number: 10307092Abstract: An analyte sensor is provided that comprises a substrate which includes a semiconductor material. Embodiments may include a core of a conductive material, and a cladding of a semiconductor material, in which the cladding may form at least a portion of a conducting path for a working electrode of the analyte sensor. Method of manufacturing and using the analyte sensor are described, as are numerous other aspects.Type: GrantFiled: August 11, 2016Date of Patent: June 4, 2019Assignee: Ascenia Diabetes Care Holdings AGInventors: Mu Wu, Jiangfeng Fei, Serban Peteu, Hoi-Cheong Steve Sun, Raeann Gifford
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Publication number: 20180328877Abstract: Analyte sensors and methods for fabricating analyte sensors are provided. In an exemplary embodiment, a planar flexible analyte sensor includes a flexible base layer and a first electrode formed from a layer of sputtered platinum on the base layer. Also, the analyte sensor includes an insulating dielectric layer over the base layer, wherein the insulating dielectric layer leaves a portion of the first electrode exposed. Further, the analyte sensor includes an electrochemical sensing stack over the exposed portion of the first electrode, including a glucose oxidase layer over the layer of sputtered platinum and a glucose limiting membrane over the glucose oxidase layer.Type: ApplicationFiled: February 20, 2018Publication date: November 15, 2018Inventors: Santhisagar Vaddiraju, Dennis Slomski, Raeann Gifford
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Publication number: 20180106751Abstract: An electrochemical test sensor for detecting the concentration of an analyte in a fluid sample. The electrochemical test sensor includes a housing that has a first end and a second opposing end. The housing includes an opening at the first end to receive a fluid test sample. An electrode assembly includes a substrate, a working electrode, a counter electrode and a reagent. The substrate has a first surface and an opposing second surface. The working electrode is disposed on the first surface of the substrate, and the counter electrode is disposed on the second surface of the substrate. The electrode assembly is positioned within the housing to define a reaction channel. The electrochemical test sensor may be used with a removable lancet mechanism or integrated within a lancet mechanism to form one integral unit.Type: ApplicationFiled: December 18, 2017Publication date: April 19, 2018Inventors: Yuan Wang, Raeann Gifford, Hualin Jiang, Jeffery S. Reynolds, Jiangfeng Fei
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Patent number: 9874536Abstract: An electrochemical test sensor for detecting the concentration of an analyte in a fluid sample. The electrochemical test sensor includes a housing that has a first end and a second opposing end. The housing includes an opening at the first end to receive a fluid test sample. An electrode assembly includes a substrate, a working electrode, a counter electrode and a reagent. The substrate has a first surface and an opposing second surface. The working electrode is disposed on the first surface of the substrate, and the counter electrode is disposed on the second surface of the substrate. The electrode assembly is positioned within the housing to define a reaction channel. The electrochemical test sensor may be used with a removable lancet mechanism or integrated within a lancet mechanism to form one integral unit.Type: GrantFiled: April 16, 2015Date of Patent: January 23, 2018Assignee: Ascensia Diabetes Care Holdings AGInventors: Yuan Wang, Raeann Gifford, Hualin Jiang, Jeffery S. Reynolds, Jiangfeng Fei
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Patent number: 9547005Abstract: A test meter system for testing a characteristic of a fluid, the test meter system including a test meter having a housing with an opening adapted to accept a test strip, an interrogation coil within the housing, a pick-up coil within the housing, and a test strip including at least one magneto-elastic-resonance sensor. When the test strip is within the opening, the interrogation coil may utilize magneto-elastic-resonance technology to interrogate the magneto-elastic-resonance sensor and the pick-up coil may be used to sense a resultant oscillation frequency of the magneto-elastic-resonance sensor, the resultant oscillation frequency associated with the characteristic. The test strip may include a plurality of sensors. The sensors may be coated with a coating sensitive to a characteristic of the fluid, where the interrogation reveals information about the fluid characteristic.Type: GrantFiled: April 17, 2014Date of Patent: January 17, 2017Assignee: ASCENSIA DIABETES CARE HOLDINGS AGInventors: Swetha Chinnayelka, Jiangfeng Fei, Yuan Wang, Narasinha Parasnis, Hoi-Cheong Steve Sun, Raeann Gifford, Steven C. Charlton
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Publication number: 20160345882Abstract: An analyte sensor is provided that comprises a substrate which includes a semiconductor material. Embodiments may include a core of a conductive material, and a cladding of a semiconductor material, in which the cladding may form at least a portion of a conducting path for a working electrode of the analyte sensor. Method of manufacturing and using the analyte sensor are described, as are numerous other aspects.Type: ApplicationFiled: August 11, 2016Publication date: December 1, 2016Inventors: Mu Wu, Jiangfeng Fei, Serban Peteu, Hoi-Cheong Steve Sun, Raeann Gifford
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Patent number: 9439585Abstract: An analyte sensor is provided that comprises a substrate which includes a semiconductor material. Embodiments may include a core of a conductive material, and a cladding of a semiconductor material, in which the cladding may form at least a portion of a conducting path for a working electrode of the analyte sensor. Method of manufacturing and using the analyte sensor are described, as are numerous other aspects.Type: GrantFiled: February 3, 2009Date of Patent: September 13, 2016Assignee: Ascensia Diabetes Care Holdings AGInventors: Mu Wu, Jiangfeng Fei, Serban Peteu, Hoi-Cheong Steve Sun, Raeann Gifford
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Publication number: 20150219587Abstract: An electrochemical test sensor for detecting the concentration of an analyte in a fluid sample. The electrochemical test sensor includes a housing that has a first end and a second opposing end. The housing includes an opening at the first end to receive a fluid test sample. An electrode assembly includes a substrate, a working electrode, a counter electrode and a reagent. The substrate has a first surface and an opposing second surface. The working electrode is disposed on the first surface of the substrate, and the counter electrode is disposed on the second surface of the substrate. The electrode assembly is positioned within the housing to define a reaction channel. The electrochemical test sensor may be used with a removable lancet mechanism or integrated within a lancet mechanism to form one integral unit.Type: ApplicationFiled: April 16, 2015Publication date: August 6, 2015Inventors: Yuan Wang, Raeann Gifford, Hualin Jiang, Jeffery S. Reynolds, Jiangfeng Fei
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Publication number: 20150208972Abstract: In some aspects, an analyte sensor is provided for obtaining and detecting an analyte concentration level in a bio-fluid sample. The analyte sensor has a sensor body including a semiconductor material, an active region coupled to the sensor body, and a lancet provided on the analyte sensor. The conductor may include a fiber having a core of a conductive material and a semiconductor cladding surrounding the core. Numerous other aspects are provided.Type: ApplicationFiled: April 6, 2015Publication date: July 30, 2015Inventors: Jiangfeng Fei, Raeann Gifford, Serban Peteu, Paul M. Ripley, Hoi-Cheong Steve Sun, Mu Wu
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Publication number: 20150208959Abstract: In some aspects, an analyte sensor is provided for obtaining and detecting an analyte concentration level in a bio-fluid sample. The analyte sensor has a sensor body including a semiconductor material, an active region coupled to the sensor body, and a lancet provided on the analyte sensor. The conductor may include a fiber having a core of a conductive material and a semiconductor cladding surrounding the core. Numerous other aspects are provided.Type: ApplicationFiled: April 8, 2015Publication date: July 30, 2015Inventors: Jiangfeng Fei, Raeann Gifford, Serban Peteu, Paul M. Ripley, Hoi-Cheong Steve Sun, Mu Wu
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Patent number: 9034172Abstract: An electrochemical test sensor for detecting the concentration of an analyte in a fluid sample. The electrochemical test sensor includes a housing that has a first end and a second opposing end. The housing includes an opening at the first end to receive a fluid test sample. An electrode assembly includes a substrate, a working electrode, a counter electrode and a reagent. The substrate has a first surface and an opposing second surface. The working electrode is disposed on the first surface of the substrate, and the counter electrode is disposed on the second surface of the substrate. The electrode assembly is positioned within the housing to define a reaction channel. The electrochemical test sensor may be used with a removable lancet mechanism or integrated within a lancet mechanism to form one integral unit.Type: GrantFiled: September 8, 2010Date of Patent: May 19, 2015Assignee: BAYER HEALTHCARE LLCInventors: Yuan Wang, Raeann Gifford, Hualin Jiang, Jeffery S. Reynolds, Jianfeng Fei
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Patent number: 9022953Abstract: In some aspects, an analyte sensor is provided for obtaining and detecting an analyte concentration level in a bio-fluid sample. The analyte sensor has a sensor body including a semiconductor material, an active region coupled to the sensor body, and a lancet provided on the analyte sensor. The conductor may include a fiber having a core of a conductive material and a semiconductor cladding surrounding the core. Numerous other aspects are provided.Type: GrantFiled: September 17, 2009Date of Patent: May 5, 2015Assignee: Bayer Healthcare LLCInventors: Jiangfeng Fei, Raeann Gifford, Serban Peteu, Paul M. Ripley, Hoi-Cheong Steve Sun, Mu Wu
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Patent number: 8868151Abstract: The use of electrical impedance spectroscopy to adjust calibration settings in an in vivo monitoring system, such as an in vivo continuous glucose monitoring sensor. The adjustments can compensate for the condition of the sensor membrane in vivo.Type: GrantFiled: August 16, 2010Date of Patent: October 21, 2014Assignee: Bayer HealthCare LLCInventors: Stanley A. Telson, Raeann Gifford, Jiangfeng Fei, Jeffery S. Reynolds
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Publication number: 20140227771Abstract: A test meter system for testing a characteristic of a fluid, the test meter system including a test meter having a housing with an opening adapted to accept a test strip, an interrogation coil within the housing, a pick-up coil within the housing, and a test strip including at least one magneto-elastic-resonance sensor. When the test strip is within the opening, the interrogation coil may utilize magneto-elastic-resonance technology to interrogate the magneto-elastic-resonance sensor and the pick-up coil may be used to sense a resultant oscillation frequency of the magneto-elastic-resonance sensor, the resultant oscillation frequency associated with the characteristic. The test strip may include a plurality of sensors. The sensors may be coated with a coating sensitive to a characteristic of the fluid, where the interrogation reveals information about the fluid characteristic.Type: ApplicationFiled: April 17, 2014Publication date: August 14, 2014Applicant: BAYER HEALTHCARE LLCInventors: Swetha Chinnayelka, Jiangfeng Fei, Yuan Wang, Narasinha Parasnis, Hoi-Cheong Steve Sun, Raeann Gifford, Steven C. Charlton
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Patent number: 8702967Abstract: A test meter system for testing a characteristic of a fluid, the test meter system including a test meter having a housing with an opening adapted to accept a test strip, an interrogation coil within the housing, a pick-up coil within the housing, and a test strip including at least one magneto-elastic-resonance sensor. When the test strip is within the opening, the interrogation coil may utilize magneto-elastic-resonance technology to interrogate the magneto elastic-resonance sensor and the pick-up coil may be used to sense a resultant oscillation frequency of the magneto elastic-resonance sensor, the resultant oscillation frequency associated with the characteristic. The test strip may include a plurality of sensors. The sensors may be coated with a coating sensitive to a characteristic of the fluid, where the interrogation reveals information about the fluid characteristic.Type: GrantFiled: June 17, 2011Date of Patent: April 22, 2014Assignee: Bayer HealthCare LLCInventors: Swetha Chinnayelka, Jiangfeng Fei, Yuan Wang, Narasinha Parasnis, Hoi-Cheong Steve Sun, Raeann Gifford, Steven Charlton
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Patent number: 8551400Abstract: In some aspects, an analyte sensor is provided for detecting an analyte concentration level in a bio-fluid sample. The analyte sensor may include a first sensor member coupled to a base, wherein the first sensor member includes a semiconductor material, a second sensor member coupled to the base; and an active region in contact with at least the first sensor member. In some aspects, the first sensor member may be a fiber, and may have a conductive core and a semiconducting cladding surrounding the core. Manufacturing methods and apparatus utilizing the sensors are provided, as are numerous other aspects.Type: GrantFiled: September 17, 2009Date of Patent: October 8, 2013Assignee: Bayer Healthcare LLCInventors: Jiangfeng Fei, Raeann Gifford, Narasinha Parasnis, Serban Peteu, Hoi-Cheong Steve Sun, Yuan Wang, Mu Wu
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Publication number: 20110312004Abstract: A test meter system for testing a characteristic of a fluid, the test meter system including a test meter having a housing with an opening adapted to accept a test strip, an interrogation coil within the housing, a pick-up coil within the housing, and a test strip including at least one magneto-electronic-resonance sensor. When the test strip is within the opening, the interrogation coil may utilize magneto-electronic-resonance technology to interrogate the magneto-electronic-resonance sensor and the pick-up coil may be used to sense a resultant oscillation frequency of the magneto-electronic-resonance sensor, the resultant oscillation frequency associated with the characteristic. The test strip may include a plurality of sensors. The sensors may be coated with a coating sensitive to a characteristic of the fluid, where the interrogation reveals information about the fluid characteristic.Type: ApplicationFiled: June 17, 2011Publication date: December 22, 2011Applicant: Bayer HealthCare LLCInventors: Swetha Chinnayelka, Jiangfeng Fei, Yuan Wang, Narasinha Parasnis, Hoi-Cheong Steve Sun, Raeann Gifford, Steven Charlton
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Publication number: 20110172559Abstract: In some aspects, an analyte sensor is provided for obtaining and detecting an analyte concentration level in a bio-fluid sample. The analyte sensor has a sensor body including a semiconductor material, an active region coupled to the sensor body, and a lancet provided on the analyte sensor. The conductor may include a fiber having a core of a conductive material and a semiconductor cladding surrounding the core. Numerous other aspects are provided.Type: ApplicationFiled: September 17, 2009Publication date: July 14, 2011Inventors: Jiangfeng Fei, Raeann Gifford, Serban Peteu, Paul M. Ripley, Hoi-Cheong Steve Sun, Mu Wu
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Publication number: 20110171071Abstract: In some aspects, an analyte sensor is provided for detecting an analyte concentration level in a bio-fluid sample. The analyte sensor may include a first sensor member coupled to a base, wherein the first sensor member includes a semiconductor material, a second sensor member coupled to the base; and an active region in contact with at least the first sensor member. In some aspects, the first sensor member may be a fiber, and may have a conductive core and a semiconducting cladding surrounding the core. Manufacturing methods and apparatus utilizing the sensors are provided, as are numerous other aspects.Type: ApplicationFiled: September 17, 2009Publication date: July 14, 2011Applicant: Bayer HealthCare LLCInventors: Jiangfeng Fei, Raeann Gifford, Narasinha Parasnis, Serban Peteu, Hoi-Cheong Steve Sun, Yuan Wang, Mu Wu