Patents by Inventor James Maxwell

James Maxwell 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: 11726153
    Abstract: A method to perform continuous-wave NMR measurements of nuclear magnetization at high magnetic fields, above 2.5 T, without analog down-mixing is described. An FPGA controls a digital clock pulse which is used to stimulate a resonant circuit and provide a reference signal. An algorithm determines the real portion of a resonant circuit signal near the Larmor frequency of the species of interest using only two measurements of the waveform per cycle. The FPGA automatically alters a variable capacitance to tune the resonant circuit to the Larmor frequency.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: August 15, 2023
    Assignee: JEFFERSON SCIENCE ASSOCIATES, LLC
    Inventors: James Maxwell, Hai Dong, Christopher Keith, Chris Cuevas
  • Publication number: 20210396825
    Abstract: A method to perform continuous-wave NMR measurements of nuclear magnetization at high magnetic fields, above 2.5 T, without analog down-mixing is described. An FPGA controls a digital clock pulse which is used to stimulate a resonant circuit and provide a reference signal. An algorithm determines the real portion of a resonant circuit signal near the Larmor frequency of the species of interest using only two measurements of the waveform per cycle. The FPGA automatically alters a variable capacitance to tune the resonant circuit to the Larmor frequency.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 23, 2021
    Inventors: JAMES MAXWELL, HAI DONG, CHRISTOPHER KEITH, CHRIS CUEVAS
  • Patent number: 8859293
    Abstract: A method of measuring an analyte in a biological fluid comprises applying an excitation signal having a DC component and an AC component. The AC and DC responses are measured; a corrected DC response is determined using the AC response; and a concentration of the analyte is determined based upon the corrected DC response. Other methods and devices are disclosed.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: October 14, 2014
    Assignees: Roche Diagnostics Operations, Inc., Roche Operations Ltd.
    Inventors: David W. Burke, Lance S. Kuhn, James Maxwell
  • Patent number: 8377707
    Abstract: A method of measuring an analyte in a biological fluid comprises applying an excitation signal having a DC component and an AC component. The AC and DC responses are measured; a corrected DC response is determined using the AC response; and a concentration of the analyte is determined based upon the corrected DC response. Other methods and devices are disclosed.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: February 19, 2013
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: David W. Burke, Lance S. Kuhn, James Maxwell
  • Publication number: 20110241694
    Abstract: A method of measuring an analyte in a biological fluid comprises applying an excitation signal having a DC component and an AC component. The AC and DC responses are measured; a corrected DC response is determined using the AC response; and a concentration of the analyte is determined based upon the corrected DC response. Other methods and devices are disclosed.
    Type: Application
    Filed: June 2, 2011
    Publication date: October 6, 2011
    Inventors: David W. Burke, Lance S. Kuhn, James Maxwell
  • Patent number: 7977112
    Abstract: A method of measuring an analyte in a biological fluid comprises applying an excitation signal having a DC component and an AC component. The AC and DC responses are measured; a corrected DC response is determined using the AC response; and a concentration of the analyte is determined based upon the corrected DC response. Other methods and devices are disclosed.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: July 12, 2011
    Assignees: Roche Diagnostics Operations, Inc., Roche Operations Ltd.
    Inventors: David W. Burke, Lance S. Kuhn, James Maxwell
  • Patent number: 7689233
    Abstract: A remote switching for handset handsfree speakerphone operation in a telephone system including an “off of shelf” analog half duplex switching speakerphone IC on a base unit and routs handset handsfree signals via a RF link to and from a microphone and a speakerphone of at least one cordless handset. The remote switching provides a handset handsfree feature on any analog and digital platform that is not equipped with DSPs or other digital means for embedded speakerphone algorithms.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: March 30, 2010
    Assignee: Vtech Telecommunications Limited
    Inventors: James Cao, James Maxwell
  • Publication number: 20090292489
    Abstract: A method of measuring an analyte in a biological fluid comprises applying an excitation signal having a DC component and an AC component. The AC and DC responses are measured; a corrected DC response is determined using the AC response; and a concentration of the analyte is determined based upon the corrected DC response. Other methods and devices are disclosed.
    Type: Application
    Filed: July 17, 2009
    Publication date: November 26, 2009
    Inventors: David W. Burke, Lance S. Kuhn, James Maxwell
  • Publication number: 20090089010
    Abstract: A method of measuring an analyte in a biological fluid comprises applying an excitation signal having a DC component and an AC component. The AC and DC responses are measured; a corrected DC response is determined using the AC response; and a concentration of the analyte is determined based upon the corrected DC response. Other methods and devices are disclosed.
    Type: Application
    Filed: December 9, 2008
    Publication date: April 2, 2009
    Inventors: David W. Burke, Lance S. Kuhn, James Maxwell
  • Patent number: 7488601
    Abstract: A method of measuring an analyte in a biological fluid comprises applying an excitation signal having a DC component and an AC component. The AC and DC responses are measured; a corrected DC response is determined using the AC response; and a concentration of the analyte is determined based upon the corrected DC response. Other methods and devices are disclosed.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: February 10, 2009
    Assignees: Roche Diagnostic Operations, Inc., Roche Operations Ltd.
    Inventors: David W. Burke, Lance S. Kuhn, James Maxwell
  • Publication number: 20080107610
    Abstract: A chewing gum composition for oral cleansing, breath freshening, and anti-microbial benefits includes Magnolia Bark extract. In a treatment process, effective amounts of Magnolia Bark extract are delivered to the oral cavity by the chewing gum composition for convenient oral cleansing and breath freshening benefits. A method of making the chewing gum composition includes forming blend of Magnolia Bark extract and a flavoring agent.
    Type: Application
    Filed: October 29, 2007
    Publication date: May 8, 2008
    Inventors: James Maxwell, Michael Greenberg
  • Publication number: 20070232228
    Abstract: A wireless repeater that includes a universal server base unit and modular donor antenna options. The universal server base unit includes a base unit bidirectional amplifier, a server antenna, and a housing that accepts an internal donor antenna board or an internal adapter module connected to a cable port for receiving a coaxial cable connected to an external donor antenna. This allows the same universal server base unit to work with a variety of internal and external donor antenna options. In particular, the external donor antennas include outdoor swivel-mounted options including a helical circular polarization antenna, a dual polarization panel antenna, and a vertical polarization panel antenna. The donor antenna may include an optional donor bidirectional antenna located in or near the donor antenna and powered via the cable from the server base unit.
    Type: Application
    Filed: April 4, 2006
    Publication date: October 4, 2007
    Inventors: David McKay, Donald Runyon, Stephen Thompson, James Maxwell
  • Publication number: 20070183990
    Abstract: A confectionary composition and a method for oral care that includes Magnolia Bark Extract in combination with a surface active agent. The effectiveness of Magnolia Bark Extract in inhibiting biofilm formation in the oral cavity is increased by a synergistic combination of the Magnolia Bark Extract with a surface active agent in an oral cavity delivery agent, such as confectionary, a lozenge, a candy, and a tablet.
    Type: Application
    Filed: November 17, 2006
    Publication date: August 9, 2007
    Inventors: Michael Dodds, James Maxwell, Michael Greenberg, Minmin Tian
  • Publication number: 20070155380
    Abstract: A remote switching for handset handsfree speakerphone operation in a telephone system including an “off of shelf” analog half duplex switching speakerphone IC on a base unit and routs handset handsfree signals via a RF link to and from a microphone and a speakerphone of at least one cordless handset. The remote switching provides a handset handsfree feature on any analog and digital platform that is not equipped with DSPs or other digital means for embedded speakerphone algorithms.
    Type: Application
    Filed: August 10, 2006
    Publication date: July 5, 2007
    Inventors: James Cao, James Maxwell
  • Publication number: 20070134171
    Abstract: A vehicle and a method for oral care that includes Magnolia Bark Extract in combination with a surface active agent. The effectiveness of Magnolia Bark Extract in inhibiting biofilm formation in the oral cavity is increased by a synergistic combination of the Magnolia Bark Extract with a surface active agent in an oral cavity delivery agent, such as spray, mouthwash, toothpaste, dental cleaner, gel, dental floss, toothpick, dentifrice, and a denture cleaner.
    Type: Application
    Filed: November 17, 2006
    Publication date: June 14, 2007
    Inventors: Michael Dodds, James Maxwell, Michael Greenberg, Minmin Tian
  • Publication number: 20070134168
    Abstract: A chewable oral composition for oral cleansing, breath freshening, and antimicrobial benefits includes fast release Magnolia Bark Extract in combination with a surface active agent. The effectiveness of Magnolia Bark Extract in inhibiting biofilm formation in the oral cavity is increased by a synergistic combination of the rapidly released Magnolia Bark Extract with a surface active agent in a chewable oral cavity delivery agent, such as chewing gum, chewable candy, and a soft tablet. The fast release of the antimicrobial agents is effectuated by encapsulation or coating of the oral cavity delivery agent.
    Type: Application
    Filed: November 17, 2006
    Publication date: June 14, 2007
    Inventors: Michael Dodds, James Maxwell, Michael Greenberg, Minmin Tian
  • Publication number: 20070090017
    Abstract: A system for recycling hydrocarbonaceous materials, such as motor oil, tires, and ores, into useful hydrocarbon distillates such as diesel fuel. A surface of a molten metal, such as lead, is used to volatilize the hydrocarbonaceous material and provide thermal-cracking conditions for the vapors produced. Thermally cracked vapors are then collected and recovered.
    Type: Application
    Filed: October 25, 2006
    Publication date: April 26, 2007
    Inventor: JAMES MAXWELL
  • Publication number: 20060275222
    Abstract: An oral composition for oral cleansing, breath freshening, and anti-microbial benefits includes an oral cavity delivery agent and an antimicrobial active agent including a synergistic combination of Magnolia Bark Extract and an essential oil. The oral composition includes chewing gums, candies, and an edible films. Specific antimicrobial active ingredient combinations include Magnolia Bark Extract and cinnamon oil or cinnamaldehyde, Magnolia Bark Extract and clove bud oil, Magnolia Bark Extract and peppermint oil.
    Type: Application
    Filed: March 29, 2006
    Publication date: December 7, 2006
    Inventors: Michael James Dodds, Darci Biesczat, James Maxwell, Michael Greenberg
  • Publication number: 20060275537
    Abstract: A method of growing a free-standing structure, such as a fiber, rod, or tube. A laser beam having is focused on a terminal end of the fiber to heat the terminal end, and at least one gaseous precursor is provided into the beam. At least one electrode is located at a distance from the terminal end. The electrode is in electrical communication with the free-standing structure. A potential is applied between the terminal end and the at least one electrode. The applied potential creates a localized high pressure plasma in the vicinity of the terminal end, and generates reactive species from the gaseous precursor, and accelerates reactive species to the terminal end to grow the free-standing structure at an enhanced rate. An apparatus for growing fibers according to the method is also disclosed.
    Type: Application
    Filed: June 2, 2005
    Publication date: December 7, 2006
    Inventors: James Maxwell, Mats Boman
  • Publication number: 20060205348
    Abstract: A relatively low cost, easy to install and aesthetically pleasing cellular signal enhancer, also known as a wireless repeater, suitable for use in a home or business. The device includes a removable mounting pedestal that can be plugged into both an upper and a lower receptacle on a signal enhancer unit. This allows the signal enhancer unit to be installed with the same upright orientation when installed on an upper or a lower support surface, for example the bottom or top casing of a window frame. The mounting pedestal includes a power plug so that the mounting pedestal is removable and can be plugged into the upper or lower receptacles on the signal enhancer unit. Alternatively, the unit may include an orientation detector and an invertible display that inverts the symbols shown on the display in response to the detected orientation of the signal enhancer unit.
    Type: Application
    Filed: May 12, 2005
    Publication date: September 14, 2006
    Inventor: James Maxwell