Patents by Inventor W. David Lee
W. David Lee 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: 20110020788Abstract: This invention relates generally to detection devices having one or more small wells each surrounded by, or in close proximity to, an NMR micro coil, each well containing a liquid sample with magnetic nanoparticles that self-assemble or disperse in the presence of a target analyte, thereby altering the measured NMR properties of the liquid sample. The device may be used, for example, as a portable unit for point of care diagnosis and/or field use, or the device may be implanted for continuous or intermittent monitoring of one or more biological species of interest in a patient.Type: ApplicationFiled: July 27, 2010Publication date: January 27, 2011Applicant: T2 Biosystems, Inc.Inventor: W. David Lee
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Publication number: 20110021374Abstract: This invention relates generally to detection devices having one or more small wells each surrounded by, or in close proximity to, an NMR micro coil, each well containing a liquid sample with magnetic nanoparticles that self-assemble or disperse in the presence of a target analyte, thereby altering the measured NMR properties of the liquid sample. The device may be used, for example, as a portable unit for point of care diagnosis and/or field use, or the device may be implanted for continuous or intermittent monitoring of one or more biological species of interest in a patient.Type: ApplicationFiled: July 27, 2010Publication date: January 27, 2011Applicant: T2 Biosystems, Inc.Inventor: W. David Lee
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Publication number: 20100072994Abstract: This invention relates generally to NMR systems for in vivo detection of analytes. More particularly, in certain embodiments, the invention relates to systems in which superparamagnetic nanoparticles are exposed to a magnetic field and radio frequency (RF) excitation at or near the Larmor frequency, such that the aggregation and/or disaggregation of the nanoparticles caused by the presence and/or concentration of a given analyte in a biological fluid is detected in vivo from a monitored RF echo response.Type: ApplicationFiled: November 8, 2007Publication date: March 25, 2010Applicant: T2 Biosystems , Inc.Inventors: W. David Lee, David A. Berry
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Patent number: 7667692Abstract: A human interface configured to optimize a biomechanical effect of a human user's opposing thumb and fingers by including, on one surface, one or more software configurable input elements manipulatable by a user's thumb(s) or a stylus, and, on another surface, one or more software configurable selection elements manipulatable by a user's finger(s). A selection element may be a pressure sensor pad configurable to represent delineated active areas that are mapped to one or more input functions. Shape changing media may be provided to permit a user to tactilely discriminate between delineated active areas. Tactile feedback may be provided to a user through palpable detents, vibratory or force producing units. Inputting data may include mapping each selection element to a shift function, mapping each input element to text functions, and using the selection elements to shift between text functions associated with an input element to input a desired text function.Type: GrantFiled: December 5, 2008Date of Patent: February 23, 2010Assignee: Zeemote, Inc.Inventors: Beth Marcus, W. David Lee
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Publication number: 20090299196Abstract: A method and system for medical imaging employs an excitation source configured to cause an object having a plurality of cells to at least one of emit, reflect, and fluoresce light. An optical receptor is employed that is configured to receive the light from the object. A filter assembly receives the light from the optical receptor and filters the light. An image processor having a field of view (FOV) substantially greater than a diameter of a cell of the object and an analysis resolution substantially matched to the diameter of a cell of the object that receives the filtered light from the filter and analyzes the filtered light corresponding to each cell in the FOV. A feedback system is provided that is configured to provide an indication of a state of each cell in the FOV and a location of a cell in the FOV meeting a predetermined condition.Type: ApplicationFiled: May 20, 2009Publication date: December 3, 2009Inventors: Moungi G. Bawendi, Jorge M. Ferrer, W. David Lee, Lisa F. Marshall, David G. Kirsch
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Patent number: 7564245Abstract: This invention relates generally to detection devices having one or more small wells each surrounded by, or in close proximity to, an NMR micro coil, each well containing a liquid sample with magnetic nanoparticles that self-assemble or disperse in the presence of a target analyte, thereby altering the measured NMR properties of the liquid sample. The device may be used, for example, as a portable unit for point of care diagnosis and/or field use, or the device may be implanted for continuous or intermittent monitoring of one or more biological species of interest in a patient.Type: GrantFiled: August 31, 2006Date of Patent: July 21, 2009Assignee: T2 Biosystems, Inc.Inventor: W. David Lee
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Publication number: 20090143142Abstract: A human interface configured to optimize a biomechanical effect of a human user's opposing thumb and fingers by including, on one surface, one or more software configurable input elements manipulatable by a user's thumb(s) or a stylus, and, on another surface, one or more software configurable selection elements manipulatable by a user's finger(s). A selection element may be a pressure sensor pad configurable to represent delineated active areas that are mapped to one or more input functions. Shape changing media may be provided to permit a user to tactilely discriminate between delineated active areas. Tactile feedback may be provided to a user through palpable detents, vibratory or force producing units. Inputting data may include mapping each selection element to a shift function, mapping each input element to text functions, and using the selection elements to shift between text functions associated with an input element to input a desired text function.Type: ApplicationFiled: December 5, 2008Publication date: June 4, 2009Applicant: ZEEMOTE, INC.Inventors: Beth Marcus, W. David Lee
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Publication number: 20090134869Abstract: This invention relates generally to detection devices having one or more small wells each surrounded by, or in close proximity to, an NMR micro coil, each well containing a liquid sample with magnetic nanoparticles that self-assemble or disperse in the presence of a target analyte, thereby altering the measured NMR properties of the liquid sample. The device may be used, for example, as a portable unit for point of care diagnosis and/or field use, or the device may be implanted for continuous or intermittent monitoring of one or more biological species of interest in a patient.Type: ApplicationFiled: September 2, 2008Publication date: May 28, 2009Applicant: T2 Biosystems, Inc.Inventor: W. David Lee
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Patent number: 7463245Abstract: A human interface configured to optimize a biomechanical effect of a human user's opposing thumb and fingers by including, on one surface, one or more software configurable input elements manipulatable by a user's thumb(s) or a stylus, and, on another surface, one or more software configurable selection elements manipulatable by a user's finger(s). A selection element may be a pressure sensor pad configurable to represent delineated active areas that are mapped to one or more input functions. Shape changing media may be provided to permit a user to tactilely discriminate between delineated active areas. Tactile feedback may be provided to a user through palpable detents, vibratory or force producing units. Inputting data may include mapping each selection element to a shift function, mapping each input element to text functions, and using the selection elements to shift between text functions associated with an input element to input a desired text function.Type: GrantFiled: May 11, 2007Date of Patent: December 9, 2008Assignee: Zeemote, Inc.Inventors: Beth Marcus, W. David Lee
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Patent number: 7218313Abstract: A human interface configured to optimize a biomechanical effect of a human user's opposing thumb and fingers by including, on one surface, one or more software configurable input elements manipulatable by a user's thumb(s) or a stylus, and, on another surface, one or more software configurable selection elements manipulatable by a user's finger(s). A selection element may be a pressure sensor pad configurable to represent delineated active areas that are mapped to one or more input functions. Shape changing media may be provided to permit a user to tactilely discriminate between delineated active areas. Tactile feedback may be provided to a user through palpable detents, vibratory or force producing units. Inputting data may include mapping each selection element to a shift function, mapping each input element to text functions, and using the selection elements to shift between text functions associated with an input element to input a desired text function.Type: GrantFiled: October 31, 2003Date of Patent: May 15, 2007Assignee: Zeetoo, Inc.Inventors: Beth Marcus, W. David Lee
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Patent number: 6970095Abstract: A theft detection system includes an accelerometer attachable to an object, the accelerometer providing an acceleration signal in response to movement of the object; an alarm mechanism for providing a signal in response to movement of the object; and for preventing false alarms, a filter programmed to determine the frequency of the acceleration signal and to provide an output to activate the alarm mechanism only when the frequency of the acceleration signal meets a predetermined criteria.Type: GrantFiled: May 17, 2000Date of Patent: November 29, 2005Assignee: Caveo Technology, LLCInventors: W. David Lee, Martin Wells, Christopher Verplaetse, Christopher Turner
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Patent number: 6861946Abstract: A motion-based input system including a motion sensor coupled to a device. The motion sensor provides a motion signal corresponding to the movement of the device. The system further includes a processor responsive to the motion signal and configured to distinguish between a tap command and a position command and provides, in response to a tap command, one or more actions, and in response to a position command, one or more different actions to control and operate the device.Type: GrantFiled: April 25, 2002Date of Patent: March 1, 2005Assignee: Caveo Technology LLC.Inventors: Christopher Verplaetse, W. David Lee, Thomas P. Evans, Jerry Nicholas Laneman
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Patent number: 6721738Abstract: A motion password control system including a motion sensor responsive to motion of a device and providing a signal corresponding to movement of the device; a database including stored data values corresponding to predetermined motion of the device; and an electronic circuit, responsive to the motion sensor, configured to compare the motion sensor signal with the stored database values, and, in response, to provide an output signal for performing at least one action of a preselected set of actions when the comparison reveals that the device has moved in a way which corresponds to the stored data values.Type: GrantFiled: January 31, 2001Date of Patent: April 13, 2004Assignee: Gaveo Technology, LLC.Inventors: Christopher Verplaetse, Christopher Turner, W. David Lee, Martin Wells
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Patent number: 6538233Abstract: A method for releasing a structure from contact with a substrate in a micromechanical device includes the step of irradiating the structure with energy having parameters selected to produce a thermal gradient normal to the surface of the structure which causes upward bowing and release of the structure from the substrate. Preferably, the structure is irradiated with laser energy and, more preferably, the structure is irradiated with pulsed laser energy. The temperature gradient creates a strain gradient, due to thermal expansion, which causes the structure to bow upwardly. Support elements react and hold the structure up after the thermal gradient has disappeared.Type: GrantFiled: November 6, 2001Date of Patent: March 25, 2003Assignee: Analog Devices, Inc.Inventors: W. David Lee, Paul A. Ruggerio
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Publication number: 20030014660Abstract: A security system including a removable circuit card having an unauthorized movement detection subsystem including a motion sensor, a processor responsive to the motion sensor for detecting whether motion sensed thereby is indicative of unauthorized movement and a response circuit activated by the processor in response to unauthorized movement. The security system also includes a power source integrated with the circuit card for powering the unauthorized movement detection subsystem in the event of a lack of available external power including removal of the circuit card.Type: ApplicationFiled: April 23, 2002Publication date: January 16, 2003Inventors: Christopher Verplaetse, W. David Lee, Thomas P. Evans, C. Gail Greenwald, Richard Kelly
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Publication number: 20020171546Abstract: A universal, customizable computer security system including a set of security input signals each relating to a possible security event and a rules engine with a universal software interface responsive to the security input signals. The rules engine is configurable to perform one or more security actions in response to each security input signal. The rules engine further includes a user interface program to allow a user to select one or more customized security actions for a combination of one or more chosen security input signals, and a universal software output interface responsive to the selected security actions.Type: ApplicationFiled: April 17, 2002Publication date: November 21, 2002Inventors: Thomas P. Evans, W. David Lee, C. Gail Greenwald, Christopher Verplaetse
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Publication number: 20020167699Abstract: A motion-based input system including a motion sensor coupled to a device. The motion sensor provides a motion signal corresponding to the movement of the device. The system further includes a processor responsive to the motion signal and configured to distinguish between a tap command and a position command and provides, in response to a tap command, one or more actions, and in response to a position command, one or more different actions to control and operate the device.Type: ApplicationFiled: April 25, 2002Publication date: November 14, 2002Inventors: Christopher Verplaetse, W. David Lee, Thomas P. Evans, Jerry Nicholas Laneman
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Publication number: 20010047488Abstract: A motion password control system including a motion sensor responsive to motion of a device and providing a signal corresponding to movement of the device; a database including stored data values corresponding to predetermined motion of the device; and an electronic circuit, responsive to the motion sensor, configured to compare the motion sensor signal with the stored database values, and, in response, to provide an output signal for performing at least one action of a preselected set of actions when the comparison reveals that the device has moved in a way which corresponds to the stored data values.Type: ApplicationFiled: January 31, 2001Publication date: November 29, 2001Inventors: Christopher Verplaetse, Christopher Turner, W. David Lee, Martin Wells
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Patent number: 5060555Abstract: Slide decelerator for a firearm has a cylindrical cavity formed in the metallic receiver of the firearm and a deformable mass of elastomeric material is disposed within the cavity. A piston is slidably fitted into the cavity and a rod extends outwardly from the piston for engagement with a depending portion of the slide. The elastomer consists of a cylindrical plug which has a diameter substantially smaller than the inner diameter of the cavity and an axial length approximately equal to that to the length of the cavity. Upon firing, the slide, being moved rearwardly by blow-back of combustion gases, will impact against the rod and elastomeric material will be deformed to thereby absorb the kinetic energy of the slide. As a result, the slide is stopped before impacting against the receiver of the firearm.Type: GrantFiled: March 30, 1990Date of Patent: October 29, 1991Assignee: Smith & Wesson Corp.Inventors: Ghaleb A. Sater, Robert L. Constant, W. David Lee
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Patent number: 4802459Abstract: This invention is directed to a method of and apparatus or device for flame switching in order to associate a flame and the energy of the flame with different and distinct energy using systems. The flame switchable gas burning device, when adapted to be mounted or attached within the oven cavity of a gas stove, provides an improved gas stove which can, within the one oven cavity, operate in the broil, bake and self-clean mode without the need for multiple burners or multiple oven cavities and without the need for manually operated baffles or dampers.Type: GrantFiled: December 21, 1987Date of Patent: February 7, 1989Assignee: Gas Research InstituteInventors: David H. McFadden, W. David Lee