Patents by Inventor Sridhar Iyengar
Sridhar Iyengar 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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Publication number: 20170205370Abstract: A test strip with an incorporated optical waveguide and deflectors punched through the optical waveguide allows light to exit through a layer of the test strip and be detected by a photo detector. Using light and a photodetector, these uniquely coded strips are identified. The waveguide can be constructed by sandwiching two layers of the test strip around a light transmissible layer. This configuration allows light to be transmitted through the test strip and out the other end, as well as allowing some light to escape the deflector. This light is detected by a photodetector mounted in the analyte test meter. The deflectors may be placed in patterns such that detection of this light indicates certain characteristics of the strip, such as non-counterfeit, regional identification, type of analyte tested, and coding information.Type: ApplicationFiled: April 3, 2017Publication date: July 20, 2017Applicant: AgaMatrix, Inc.Inventors: Sridhar Iyengar, Ian Harding, Charles Boiteau, Colin Butters
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Patent number: 9632056Abstract: A test strip with an incorporated optical waveguide and deflectors punched through the optical waveguide allows light to exit through a layer of the test strip and be detected by a photo detector. Using light and a photodetector, these uniquely coded strips are identified. The waveguide can be constructed by sandwiching two layers of the test strip around a light transmissible layer. This configuration allows light to be transmitted through the test strip and out the other end, as well as allowing some light to escape the deflector. This light is detected by a photodetector mounted in the analyte test meter. The deflectors may be placed in patterns such that detection of this light indicates certain characteristics of the strip, such as non-counterfeit, regional identification, type of analyte tested, and coding information.Type: GrantFiled: December 10, 2015Date of Patent: April 25, 2017Assignee: AgaMatrix, Inc.Inventors: Sridhar Iyengar, Ian Harding, Charles Boiteau, Colin Butters
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Publication number: 20160367192Abstract: Devices, systems, and, methods for measuring deformation variation in an insole to determine characteristics of a user, including weight and gait, are described herein. In some embodiments, a device includes an insole having a fluid reservoir configured to be disposed in a shoe, a deformation sensor, and a communications module. The fluid reservoir includes a first portion and a second portion. The deformation sensor is coupled to the fluid reservoir and is configured to measure a deformation in at least one of the first portion and the second portion. The communications module is configured to receive the measured deformation from the deformation sensor and transmit the measured deformation to a remote device.Type: ApplicationFiled: June 16, 2016Publication date: December 22, 2016Inventors: Sridhar IYENGAR, Matthew Charles DIAMOND
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Publication number: 20160331322Abstract: Apparatuses, devices, and methods for measuring pressure are described herein. In some embodiments, a device includes an insole configured to be disposed under a foot of a user during use. The device further includes a fluid reservoir formed at least partly within the insole, the fluid reservoir containing a fluid. The device further includes a sensor fluidically coupled to the fluid reservoir and configured to sense an indication of pressure in the fluid reservoir during use. The device also includes a communications component communicatively coupled to the sensor and configured to receive the indication of pressure from the sensor. The communication component is further configured to transmit pressure information associated with the indication of pressure to a remote device.Type: ApplicationFiled: March 25, 2016Publication date: November 17, 2016Inventors: Jae S. SON, Matthew Charles DIAMOND, Sridhar IYENGAR
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Publication number: 20160231321Abstract: A method and apparatus for electrochemical detection of analyte in a sample makes use of a binding interaction and relies on the discovery that asymmetric distribution of a redox enzyme between two electrodes that occurs when a redox enzyme-containing reagent is immobilized at the surface of one electrode can be detected as a chemical potential gradient arising from an asymmetry in the distribution of oxidized or reduced redox substrate. This chemical potential gradient can be detected potentiometrically by observing the potential difference between the electrodes in an open circuit, or amperometrically by observing the current flow between the electrodes when the circuit is closed. In both cases, the observation of asymmetry can be done without the application of an external potential or current to the electrodes.Type: ApplicationFiled: February 8, 2016Publication date: August 11, 2016Applicant: AgaMatrix, Inc.Inventors: Ian Harding, Sridhar Iyengar, Richard Williams
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Publication number: 20160209349Abstract: The present invention provides a method and apparatus for creating test strips that may be identified based on differences in electrical conduction or resistance between contact point on the test strip. This is achieved by creating a base test strip with contact points that may be connected to other contact points by an electrical connection. These base test strips may be modified to create a difference in electrical conductivity between contact points, or a contact point may be eliminated. This modification can be used to distinguish different types of test strips based on electrical signature. Additionally, the base test strip may be created such that multiple modifications are possible to distinguish numerous characteristics of test strips.Type: ApplicationFiled: January 5, 2016Publication date: July 21, 2016Applicant: AgaMatrix, Inc.Inventors: Charles Boiteau, Martin Forest, Sridhar Iyengar, Baoguo Wei
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Publication number: 20160192871Abstract: Correction for initial variation in thickness of a polymer layer and for changes in the coating thickness that occur after implantation of a biosensor and therefore provides substantial increase in the accuracy and lifetime of implantable sensors is done using a factor derived from the decay of potential.Type: ApplicationFiled: March 14, 2016Publication date: July 7, 2016Applicant: AgaMatrix, Inc.Inventors: Sridhar Iyengar, Ian Harding
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Patent number: 9375173Abstract: Correction for initial variation in thickness of a polymer layer and for changes in the coating thickness that occur after implantation of a biosensor and therefore provides substantial increase in the accuracy and lifetime of implantable sensors is done using a factor derived from the decay of potential.Type: GrantFiled: January 21, 2015Date of Patent: June 28, 2016Assignee: AgaMatrix, Inc.Inventors: Sridhar Iyengar, Ian Harding
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Publication number: 20160169828Abstract: The presence of oxygen or red blood cells in a sample applied to an electrochemical test strip that makes use of a reduced mediator is corrected for by an additive correction factor that is determined as a function of the temperature of the sample and a measurement that reflects the oxygen carrying capacity of the sample. The measured oxygen carrying capacity can also be used to determine hematocrit and to distinguish between blood samples and control solutions applied to a test strip.Type: ApplicationFiled: January 5, 2016Publication date: June 16, 2016Applicant: AgaMatrix, Inc.Inventors: Ian Harding, Richard Williams, Sridhar Iyengar
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Publication number: 20160091449Abstract: A test strip with an incorporated optical waveguide and deflectors punched through the optical waveguide allows light to exit through a layer of the test strip and be detected by a photo detector. Using light and a photodetector, these uniquely coded strips are identified. The waveguide can be constructed by sandwiching two layers of the test strip around a light transmissible layer. This configuration allows light to be transmitted through the test strip and out the other end, as well as allowing some light to escape the deflector. This light is detected by a photodetector mounted in the analyte test meter. The deflectors may be placed in patterns such that detection of this light indicates certain characteristics of the strip, such as non-counterfeit, regional identification, type of analyte tested, and coding information.Type: ApplicationFiled: December 10, 2015Publication date: March 31, 2016Applicant: AgaMatrix, Inc.Inventors: Sridhar Iyengar, Ian Harding, Charles Boiteau, Colin Butters
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Publication number: 20160061763Abstract: A test meter for receiving a test strip comprises: (a) a housing; (b) electronic circuitry disposed within the housing and (c) a strip port connector connected to the electronic circuitry and extending to an opening in the housing, said strip port connector connecting the electronic circuitry with a received test strip. The strip port connector contains a pair of top and bottom contacts, said top and bottom contacts having a proximal end and a distal end and a central contact portion, the top and bottom contacts of the pair are transversely aligned with one another; and the distal ends of the top and bottom contacts are separated or separable from one another by insertion of a test strip between the opposed contacts. The contacts and the meter are adapted to permit detection of faulty contacts and/or coding associated with an inserted test strip.Type: ApplicationFiled: September 30, 2015Publication date: March 3, 2016Applicant: AGAMATRIX, INC.Inventors: Sridhar Iyengar, Charles Boiteau, Martin Forest, Colin Butters
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Patent number: 9244000Abstract: A test strip with an incorporated optical waveguide and deflectors punched through the optical waveguide allows light to exit through a layer of the test strip and be detected by a photo detector. Using light and a photodetector, these uniquely coded strips are identified. The waveguide can be constructed by sandwiching two layers of the test strip around a light transmissible layer. This configuration allows light to be transmitted through the test strip and out the other end, as well as allowing some light to escape the deflector. This light is detected by a photodetector mounted in the analyte test meter. The deflectors may be placed in patterns such that detection of this light indicates certain characteristics of the strip, such as non-counterfeit, regional identification, type of analyte tested, and coding information.Type: GrantFiled: June 30, 2011Date of Patent: January 26, 2016Assignee: AgaMatrix, Inc.Inventors: Sridhar Iyengar, Ian Harding, Charles Boiteau, Collin Butters
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Patent number: 9234862Abstract: The presence of oxygen or red blood cells in a sample applied to an electrochemical test strip that makes use of a reduced mediator is corrected for by an additive correction factor that is determined as a function of the temperature of the sample and a measurement that reflects the oxygen carrying capacity of the sample. The measured oxygen carrying capacity can also be used to determine hematocrit and to distinguish between blood samples and control solutions applied to a test strip.Type: GrantFiled: May 15, 2014Date of Patent: January 12, 2016Assignee: AgaMatrix, Inc.Inventors: Ian Harding, Richard Williams, Sridhar Iyengar
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Patent number: 9176091Abstract: A test meter for receiving a test strip comprises: (a) a housing; (b) electronic circuitry disposed within the housing and (c) a strip port connector connected to the electronic circuitry and extending to an opening in the housing, said strip port connector connecting the electronic circuitry with a received test strip. The strip port connector contains a pair of top and bottom contacts, said top and bottom contacts having a proximal end and a distal end and a central contact portion, the top and bottom contacts of the pair are transversely aligned with one another; and the distal ends of the top and bottom contacts are separated or separable from one another by insertion of a test strip between the opposed contacts. The contacts and the meter are adapted to permit detection of faulty contacts and/or coding associated with an inserted test strip.Type: GrantFiled: September 16, 2011Date of Patent: November 3, 2015Assignee: AgaMatrix, Inc.Inventors: Sridhar Iyengar, Charles Boiteau, Martin Forest, Colin Butters
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Publication number: 20150133758Abstract: Correction for initial variation in thickness of a polymer layer and for changes in the coating thickness that occur after implantation of a biosensor and therefore provides substantial increase in the accuracy and lifetime of implantable sensors is done using a factor derived from the decay of potential.Type: ApplicationFiled: January 21, 2015Publication date: May 14, 2015Inventors: Sridhar Iyengar, Ian Harding
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Publication number: 20140326616Abstract: The presence of oxygen or red blood cells in a sample applied to an electrochemical test strip that makes use of a reduced mediator is corrected for by an additive correction factor that is determined as a function of the temperature of the sample and a measurement that reflects the oxygen carrying capacity of the sample. The measured oxygen carrying capacity can also be used to determine hematocrit and to distinguish between blood samples and control solutions applied to a test strip.Type: ApplicationFiled: May 15, 2014Publication date: November 6, 2014Applicant: AgaMatrix, Inc.Inventors: Ian Harding, Richard Williams, Sridhar Iyengar
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Patent number: 8758582Abstract: An electrochemical test strip is formed from a first insulating substrate layer, a second substrate layer, and an intervening insulating spacer layer. An opening in the insulating spacer layer defines a test cell which is in contact with the inner surface of the first substrate on one side and the inner surface of the second substrate on the other side. The size of the test cell is determined by the area of substrate exposed and the thickness of the spacer layer. Working and counter electrodes appropriate for the analyte to be detected are disposed on the first insulating substrate in a location within the test cell. The working and counter electrodes are associated with conductive leads that allow The second substrate is conductive at least in a region facing the working and counter electrodes. No functional connection of this conductive surface of the second substrate to the meter is required.Type: GrantFiled: July 21, 2008Date of Patent: June 24, 2014Assignee: AgaMatrix, Inc.Inventors: Ian Harding, Sridhar Iyengar
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Patent number: 8758594Abstract: The presence of oxygen or red blood cells in a sample applied to an electrochemical test strip that makes use of a reduced mediator is corrected for by an additive correction factor that is determined as a function of the temperature of the sample and a measurement that reflects the oxygen carrying capacity of the sample. The measured oxygen carrying capacity can also be used to determine hematocrit and to distinguish between blood samples and control solutions applied to a test strip.Type: GrantFiled: December 21, 2012Date of Patent: June 24, 2014Assignee: AgaMatrix, Inc.Inventors: Ian Harding, Richard Williams, Sridhar Iyengar
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Publication number: 20130175184Abstract: A test meter for receiving a test strip comprises: (a) a housing; (b) electronic circuitry disposed within the housing and (c) a strip port connector connected to the electronic circuitry and extending to an opening in the housing, said strip port connector connecting the electronic circuitry with a received test strip. The strip port connector contains a pair of top and bottom contacts, said top and bottom contacts having a proximal end and a distal end and a central contact portion, the top and bottom contacts of the pair are transversely aligned with one another; and the distal ends of the top and bottom contacts are separated or separable from one another by insertion of a test strip between the opposed contacts. The contacts and the meter are adapted to permit detection of faulty contacts and/or coding associated with an inserted test strip.Type: ApplicationFiled: September 16, 2011Publication date: July 11, 2013Applicant: AGAMATRIX, INC.Inventors: Sridhar Iyengar, Charles Boiteau, Martin Forest, Colin Butters
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Publication number: 20130146478Abstract: A test strip with an incorporated optical waveguide and deflectors punched through the optical waveguide allows light to exit through a layer of the test strip and be detected by a photo detector. Using light and a photodetector, these uniquely coded strips are identified. The waveguide can be constructed by sandwiching two layers of the test strip around a light transmissible layer. This configuration allows light to be transmitted through the test strip and out the other end, as well as allowing some light to escape the deflector. This light is detected by a photodetector mounted in the analyte test meter. The deflectors may be placed in patterns such that detection of this light indicates certain characteristics of the strip, such as non-counterfeit, regional identification, type of analyte tested, and coding information.Type: ApplicationFiled: June 30, 2011Publication date: June 13, 2013Applicant: AgaMatrix, INC.Inventors: Sridhar Iyengar, Ian Harding, Charles Boiteau, Colin Butters