Patents by Inventor Steven Diamond
Steven Diamond 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: 8016997Abstract: A method is provided for determining analyte concentrations, for example glucose concentrations, that utilizes a dynamic determination of the appropriate time for making a glucose measurement, for example when a current versus time curve substantially conforms to a Cottrell decay, or when the current is established in a plateau region. Dynamic determination of the time to take the measurement allows each strip to operate in the shortest appropriate time frame, thereby avoiding using an average measurement time that may be longer than necessary for some strips and too short for others.Type: GrantFiled: January 12, 2010Date of Patent: September 13, 2011Assignee: Agamatrix, Inc.Inventors: Steven Diamond, Ian Harding, Sridhar G. Iyengar, Baoguo Wei
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Patent number: 7964146Abstract: The ability to switch at will between amperometric measurements and potentiometric measurements provides great flexibility in performing analyses of unknowns. Apparatus and methods can provide such switching to collect data from an electrochemical cell. The cell may contain a reagent disposed to measure glucose in human blood.Type: GrantFiled: April 15, 2005Date of Patent: June 21, 2011Assignee: AgaMatrix, Inc.Inventors: Ian Harding, Sridhar G. Iyengar, Baoguo Wei, Sonny Vu, Eileen Huang, Joseph Flaherty, Steven Diamond, Martin Forest
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Patent number: 7943034Abstract: A method and apparatus for provide a stable voltage to an electrochemical cell used for measurement of an analyte such as glucose in a liquid sample. The apparatus uses a circuit in which multiple switching positions provide both calibration information for use in calibration of electronic components in the circuit and error checking functionality.Type: GrantFiled: October 18, 2007Date of Patent: May 17, 2011Assignee: Agamatrix, Inc.Inventors: Steven Diamond, Martin Forest, Darius Rad, Baoguo Wei
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Publication number: 20110089760Abstract: According to a preferred embodiment of the invention, the system for managing a power system with a plurality of power components that includes power source components and power consumption components includes a central power bus, a plurality of adaptable connectors that each electrically couple to a power component and to the central power bus, and a control processor that receives the state of each power component from the respective adaptable connector and is configured to balance the voltage and current output from each power source component to provide a desired power to a power consumption component based on the received states.Type: ApplicationFiled: October 20, 2010Publication date: April 21, 2011Inventors: Jim Michael Castelaz, Jessica Riley, Steven Diamond, Sam Chang, Vishal Parikh, Benson Tsai
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Publication number: 20110073496Abstract: Measurement of the series track resistance of a working and counter electrode pair in an electrochemical test strip provide error detection for multiple variations in the quality of the test strip, as well as the operation of strip in the test meter. In particular, a single measurement of series resistance can be used to detect and generate an error message when an incorrect reading is likely to result due to (1) damaged electrode tracks, (2) fouled electrode surfaces, (3) dirty strip contacts, or (4) short circuit between the electrodes.Type: ApplicationFiled: December 7, 2010Publication date: March 31, 2011Applicant: AGAMATRIX, INC.Inventors: Steven Diamond, Ian Harding, Richard Williams
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Publication number: 20100308837Abstract: A test strip and analytical apparatus have pin connections permitting the definition of geographic regions or of particular customers. A test strip made for use in a particular region or for a particular customer will have pin connections matching features of the apparatus made for use in that region or by that customer. Insertion of the strip into the apparatus does not merely turn on the apparatus, but provides the regional or customer coding. Analog switches within the apparatus allow coding of a larger number of distinct regions or customers than would otherwise be possible, all without degrading the quality of the measurements made of the fluid being tested. Conductive paths in the strips permit testing the strips during manufacture so as to detect quality lapses regarding the printing or deposition of the paths.Type: ApplicationFiled: May 11, 2010Publication date: December 9, 2010Applicant: AGAMATRIX, INC.Inventors: Steven Diamond, Martin Forest, Baoguo Wei, Ian Harding, Sridhar Iyengar
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Patent number: 7846321Abstract: Measurement of the series track resistance of a working and counter electrode pair in an electrochemical test strip provide error detection for multiple variations in the quality of the test strip, as well as the operation of strip in the test meter. In particular, a single measurement of series resistance can be used to detect and generate an error message when an incorrect reading is likely to result due to (1) damaged electrode tracks, (2) fouled electrode surfaces, (3) dirty strip contacts, or (4) short circuit between the electrodes.Type: GrantFiled: October 18, 2007Date of Patent: December 7, 2010Assignee: Agamatrix, Inc.Inventors: Steven Diamond, Ian Harding, Richard Williams
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Publication number: 20100237830Abstract: A system for balancing charge within a battery pack with a plurality of cells connected in series, including a capacitor; a processor configured to select a combination of donor cells and receiver cells from the plurality of cells in one of the following two modes: (1) a first mode where the number of donor cells is equal to the number of receiver cells, and (2) a second mode where the number of donor cells is greater than the number of receiver cells; and a plurality of switches that electrically connect the capacitor to the donor cells to charge the capacitor, and that electrically connected the capacitor to the receiver cells to discharge the capacitor. The transfer of charge between cells in the plurality of cells through the capacitor balances the charge within the battery pack.Type: ApplicationFiled: March 23, 2010Publication date: September 23, 2010Inventors: Jim Castelaz, Jessica Riley, Vishal Parikh, Steven Diamond, Samuel Chang
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Patent number: 7771583Abstract: Determination of an analyte with increased accuracy is achieved by electrochemically determining an initial analyte concentration, performing a plurality of amperometric/potentiometric switching cycles, observing a characteristic of the signal during each of the plurality of switching cycles, determining an averaged value for the characteristic of the signal, and correcting the initial measurement value to arrive at a final measurement value of analyte concentration or rejecting the initial measurement value depending on the averaged value of the characteristic of the signal. The characteristic of the signal that is observed is not per se indicative of the amount of analyte present in a sample. Rather, it is a characteristic of the signal that reflects the quality of the electrodes, the extent of fill of the electrochemical cell or characteristics of the sample other than analyte concentration such as oxygen levels or hematocrit.Type: GrantFiled: October 18, 2007Date of Patent: August 10, 2010Assignee: Agamatrix, Inc.Inventors: Steven Diamond, Ian Harding, Sridhar Iyengar, Richard Williams
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Publication number: 20100126881Abstract: A method is provided for determining analyte concentrations, for example glucose concentrations, that utilizes a dynamic determination of the appropriate time for making a glucose measurement, for example when a current versus time curve substantially conforms to a Cottrell decay, or when the current is established in a plateau region. Dynamic determination of the time to take the measurement allows each strip to operate in the shortest appropriate time frame, thereby avoiding using an average measurement time that may be longer than necessary for some strips and too short for others.Type: ApplicationFiled: January 12, 2010Publication date: May 27, 2010Applicant: AGAMATRIX, INC.Inventors: Steven Diamond, Ian Harding, Sridhar G. Iyengar, Baoguo Wei
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Patent number: 7713392Abstract: A test strip and analytical apparatus have pin connections permitting the definition of geographic regions or of particular customers. A test strip made for use in a particular region or for a particular customer will have pin connections matching features of the apparatus made for use in that region or by that customer. Insertion of the strip into the apparatus does not merely turn on the apparatus, but provides the regional or customer coding. Analog switches within the apparatus allow coding of a larger number of distinct regions or customers than would otherwise be possible, all without degrading the quality of the measurements made of the fluid being tested. Conductive paths in the strips permit testing the strips during manufacture so as to detect quality lapses regarding the printing or deposition of the paths.Type: GrantFiled: April 15, 2005Date of Patent: May 11, 2010Assignee: Agamatrix, Inc.Inventors: Ian Harding, Sridhar Iyengar, Baoguo Wei, Steven Diamond, Martin Forest
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Patent number: 7645374Abstract: A method is provided for determining analyte concentrations, for example glucose concentrations, that utilizes a dynamic determination of the appropriate time for making a glucose measurement, for example when a current versus time curve substantially conforms to a Cottrell decay, or when the current is established in a plateau region. Dynamic determination of the time to take the measurement allows each strip to operate in the shortest appropriate time frame, thereby avoiding using an average measurement time that may be longer than necessary for some strips and too short for others.Type: GrantFiled: April 15, 2005Date of Patent: January 12, 2010Assignee: AgaMatrix, Inc.Inventors: Steven Diamond, Ian Harding, Sridhar G. Iyengar, Baoguo Wei
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Patent number: 7547382Abstract: Partial fill of an electrochemical test strip is determined by making a DC determination of double layer capacitance from charging or discharging charge on a test strip containing sample, for example a blood sample to be tested for glucose. The measured double layer capacitance is compared to a reference value. The double layer capacitance may be determined as an integral or differential capacitance. Double layer capacitance may also be used for quality control to monitor the quality of electrode formation, particularly in strips using screen printed electrodes.Type: GrantFiled: April 15, 2005Date of Patent: June 16, 2009Assignee: Agamatrix, Inc.Inventors: Ian Harding, Steven Diamond, Richard Williams, Sridhar G. Iyengar
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Patent number: 7517439Abstract: Measurement of the series resistance of a working and counter electrode pair in an electrochemical test strip provide error detection for multiple variations in the quality of the test strip, as well as the operation of strip in the test meter. In particular, a single measurement of series resistance can be used to detect and generate an error message when an incorrect reading is likely to result due to (1) damaged electrode tracks, (2) fouled electrode surfaces, (3) dirty strip contacts, or (4) short circuit between the electrodes.Type: GrantFiled: April 15, 2005Date of Patent: April 14, 2009Assignee: AgaMatrix, Inc.Inventors: Ian Harding, Richard Williams, Steven Diamond
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Patent number: 7372277Abstract: An electrochemical cell has two terminals. One of the terminals is connected to a pulse-width-modulated (PWM) power supply and to a voltmeter. The other terminal is connected to circuitry capable of switching between amperometric and potentiometric measurement modes. A sequence of successive approximations permits selection of a PWM duty cycle giving rise to a desired voltage at the terminal connected with the power supply. In this way a stable excitation voltage is supplied to the cell even in the face of supply voltage instability or drift or instability in electronics coupled with the cell.Type: GrantFiled: April 15, 2005Date of Patent: May 13, 2008Assignee: Agamatrix, Inc.Inventors: Steven Diamond, Martin Forest, Baoguo Wei
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Publication number: 20080093228Abstract: A method and apparatus for provide a stable voltage to an electrochemical cell used for measurement of an analyte such as glucose in a liquid sample. The apparatus uses a circuit in which multiple switching positions provide both calibration information for use in calibration of electronic components in the circuit and error checking functionality.Type: ApplicationFiled: October 18, 2007Publication date: April 24, 2008Applicant: AGAMATRIX, INC.Inventors: Steven Diamond, Martin Forest, Darius Rad, Baoguo Wei
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Publication number: 20080093227Abstract: Measurement of the series track resistance of a working and counter electrode pair in an electrochemical test strip provide error detection for multiple variations in the quality of the test strip, as well as the operation of strip in the test meter. In particular, a single measurement of series resistance can be used to detect and generate an error message when an incorrect reading is likely to result due to (1) damaged electrode tracks, (2) fouled electrode surfaces, (3) dirty strip contacts, or (4) short circuit between the electrodes.Type: ApplicationFiled: October 18, 2007Publication date: April 24, 2008Applicant: AGAMATRIX, INC.Inventors: Steven Diamond, Ian Harding, Richard Williams
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Publication number: 20080093230Abstract: Determination of an analyte with increased accuracy is achieved by electrochemically determining an initial analyte concentration, performing a plurality of amperometric/potentiometric switching cycles, observing a characteristic of the signal during each of the plurality of switching cycles, determining an averaged value for the characteristic of the signal, and correcting the initial measurement value to arrive at a final measurement value of analyte concentration or rejecting the initial measurement value depending on the averaged value of the characteristic of the signal. The characteristic of the signal that is observed is not per se indicative of the amount of analyte present in a sample. Rather, it is a characteristic of the signal that reflects the quality of the electrodes, the extent of fill of the electrochemical cell or characteristics of the sample other than analyte concentration such as oxygen levels or hematocrit.Type: ApplicationFiled: October 18, 2007Publication date: April 24, 2008Applicant: AGAMATRIX, INC.Inventors: Steven Diamond, Ian Harding, Sridhar Iyengar, Richard Williams
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Publication number: 20080073224Abstract: An electrochemical cell has two terminals. One of the terminals is connected to a pulse-width-modulated (PWM) power supply and to a voltmeter. The other terminal is connected to circuitry capable of switching between amperometric and potentiometric measurement modes. A sequence of successive approximations permits selection of a PWM duty cycle giving rise to a desired voltage at the terminal connected with the power supply. In this way a stable excitation voltage is supplied to the cell even in the face of supply voltage instability or drift or instability in electronics coupled with the cell.Type: ApplicationFiled: November 8, 2007Publication date: March 27, 2008Applicant: AgaMatrix,Inc.Inventors: Steven Diamond, Martin Forest, Baoguo Wei
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Publication number: 20060231418Abstract: Partial fill of an electrochemical test strip is determined by making a DC determination of double layer capacitance from charging or discharging charge on a test strip containing sample, for example a blood sample to be tested for glucose. The measured double layer capacitance is compared to a reference value. The double layer capacitance may be determined as an integral or differential capacitance. Double layer capacitance may also be used for quality control to monitor the quality of electrode formation, particularly in strips using screen printed electrodes.Type: ApplicationFiled: April 15, 2005Publication date: October 19, 2006Applicant: AGAMATRIX, INC.Inventors: Ian Harding, Steven Diamond, Richard Williams, Sridhar Iyengar