Patents by Inventor Karl R. Zawoy

Karl R. Zawoy 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: 9774239
    Abstract: Embodiments of the subject invention are drawn to power supply units and systems for supplying power to loads. Specific embodiments relate to systems incorporating the loads. The power supply units and systems can include a feedback mechanism for monitoring the system and maintaining a parameter of interest at or near a desired value (e.g., for maintaining the frequency of operation at or near resonance). The feedback mechanism is configured such that, if the at least one parameter indicates that the frequency of operation is away from a resonant frequency of the power amplifier, the feedback mechanism adjusts the frequency of operation closer to the resonant frequency of the power amplifier. The at least one load can have a variable impedance, though embodiments are not limited thereto.
    Type: Grant
    Filed: December 24, 2012
    Date of Patent: September 26, 2017
    Assignee: University of Florida Research Foundation, Incorporated
    Inventors: Raul Andres Chinga, Karl R. Zawoy, Subrata Roy, Jenshan Lin
  • Patent number: 9731013
    Abstract: An electromagnetic radiation activated device comprises a property changing material and at least one functionalized fullerene that upon irradiation of the functionalized fullerenes with electromagnetic radiation of one or more frequencies a thermally activated chemical or physical transformation occurs in the property changing material. The thermal activated transformation of the property changing material is triggered by the heating or combustion of the functionalized fullerenes upon their irradiation. The device can include a chemical agent that is embedded in the property changing material and is released when the material is heated by the functionalized fullerenes upon irradiation.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: August 15, 2017
    Assignee: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Vijay Krishna, Karl R. Zawoy, Brij M. Moudgil, Benjamin L. Koopman, Nathanael Ian Stevens, Kevin William Powers
  • Publication number: 20160175243
    Abstract: The subject invention concerns nanorods, compositions and substrates comprising nanorods, and methods of making and using nanorods and nanorod compositions and substrates. In one embodiment, the nanorod is composed of Zinc oxide (ZnO). In a further embodiment, a nanorod of the invention further comprises SiO2 or TiO2. In a specific embodiment, a nanorod of the invention is composed of ZnO coated with SiO2. Nanorods of the present invention are useful as an adhesion-resistant biomaterial capable of reducing viability in anchorage-dependent cells.
    Type: Application
    Filed: January 7, 2015
    Publication date: June 23, 2016
    Inventors: TANMAY P. LELE, FAN REN, BENJAMIN G. KESELOWSKY, JIYEON LEE, ANAND GUPTE, BYUNG-HWAN CHU, KARL R. ZAWOY
  • Publication number: 20150246149
    Abstract: A method and apparatus for disinfecting and/or self-sterilizing at least a portion of the surface of a stethoscope is provided. Methods and devices are provided by which a device or apparatus can generate a sterilizing plasma such that a stethoscope, or portion of a stethoscope, can be placed within or near the device or apparatus so that the plasma disinfects and/or sterilizes and/or decontaminates at least a portion of the stethoscope. A method and apparatus are disclosed for providing a self-disinfecting and/or self-sterilizing and/or self-decontaminating stethoscope and stethoscope disinfecting and/or sterilization apparatus for disinfecting and/or sterilizing, respectively, all or at least a portion of a stethoscope.
    Type: Application
    Filed: May 12, 2015
    Publication date: September 3, 2015
    Inventors: KARL R. ZAWOY, SUBRATA ROY, DANIEL WILLIAM PITUCH
  • Publication number: 20150190508
    Abstract: An electromagnetic radiation activated device comprises a property changing material and at least one functionalized fullerene that upon irradiation of the functionalized fullerenes with electromagnetic radiation of one or more frequencies a thermally activated chemical or physical transformation occurs in the property changing material. The thermal activated transformation of the property changing material is triggered by the heating or combustion of the functionalized fullerenes upon their irradiation. The device can include a chemical agent that is embedded in the property changing material and is released when the material is heated by the functionalized fullerenes upon irradiation.
    Type: Application
    Filed: March 24, 2015
    Publication date: July 9, 2015
    Inventors: VIJAY KRISHNA, KARL R. ZAWOY, BRIJ M. MOUDGIL, BENJAMIN L. KOOPMAN, NATHANAEL IAN STEVENS, KEVIN WILLIAM POWERS
  • Patent number: 9056148
    Abstract: A method and apparatus for disinfecting and/or self-sterilizing at least a portion of the surface of a stethoscope is provided. Methods and devices are provided by which a device or apparatus can generate a sterilizing plasma such that a stethoscope, or portion of a stethoscope, can be placed within or near the device or apparatus so that the plasma disinfects and/or sterilizes and/or decontaminates at least a portion of the stethoscope. A method and apparatus are disclosed for providing a self-disinfecting and/or self-sterilizing and/or self-decontaminating stethoscope and stethoscope disinfecting and/or sterilization apparatus for disinfecting and/or sterilizing, respectively, all or at least a portion of a stethoscope.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: June 16, 2015
    Assignee: University of Florida Research Foundation, Inc.
    Inventors: Karl R. Zawoy, Subrata Roy, Daniel William Pituch
  • Patent number: 8950886
    Abstract: A solar-powered lighting module is provided, including a solar cell for generating electricity when exposed to light, a battery for storing charge from the generated electricity, and a light generating device powered by the stored charge. In an embodiment, the module further includes a controller that regulates the current transmitted between the components of the module. In a further embodiment, the module is incorporated into an interface to an environmentally controlled space and can be positioned to light an interior portion of the space. In another embodiment, the solar cell and light generating device are transparent to allow light to pass through the interface. In a further embodiment, tinted-color conjugated polymers incorporated into the module limit the spectrum of light that can pass through the interface. In yet another embodiment, a method of modifying an existing interface with such a module is provided.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: February 10, 2015
    Assignee: University of Florida Research Foundation, Inc.
    Inventors: Ying S. Meng, Karl R. Zawoy, Jiangeng Xue, Franky So, John R. Reynolds
  • Publication number: 20140346875
    Abstract: Embodiments of the subject invention are drawn to power supply units and systems for supplying power to loads. Specific embodiments relate to systems incorporating the loads. The power supply units and systems can include a feedback mechanism for monitoring the system and maintaining a parameter of interest at or near a desired value (e.g., for maintaining the frequency of operation at or near resonance). The feedback mechanism is configured such that, if the at least one parameter indicates that the frequency of operation is away from a resonant frequency of the power amplifier, the feedback mechanism adjusts the frequency of operation closer to the resonant frequency of the power amplifier. The at least one load can have a variable impedance, though embodiments are not limited thereto.
    Type: Application
    Filed: December 24, 2012
    Publication date: November 27, 2014
    Inventors: Raul Andres Chinga, Karl R. Zawoy, Subrata Roy, Jenshan Lin
  • Publication number: 20130218049
    Abstract: A method and apparatus for disinfecting and/or self-sterilizing at least a portion of the surface of a stethoscope is provided. Methods and devices are provided by which a device or apparatus can generate a sterilizing plasma such that a stethoscope, or portion of a stethoscope, can be placed within or near the device or apparatus so that the plasma disinfects and/or sterilizes and/or decontaminates at least a portion of the stethoscope. A method and apparatus are disclosed for providing a self-disinfecting and/or self-sterilizing and/or self-decontaminating stethoscope and stethoscope disinfecting and/or sterilization apparatus for disinfecting and/or sterilizing, respectively, all or at least a portion of a stethoscope.
    Type: Application
    Filed: October 27, 2011
    Publication date: August 22, 2013
    Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Karl R. Zawoy, Subrata Roy, Daniel William Pituch
  • Publication number: 20130067909
    Abstract: A curved multimorph actuator is provided composed of a plurality of materials, each material exhibiting different deformations in response to a stimulus, such as heat. Application of different stimuli causes the actuator to bend and/or twist. In an embodiment, the actuator is capable of rotating an object about its center without significantly shifting the center in one or more dimensions. In a further embodiment, the actuator can be used to rotate an object about a first axis and a second axis, wherein the first axis and the second axis are mutually perpendicular. In an embodiment, rotation about the first axis and the second axis are achieved in combination. In another embodiment, rotation about the first axis is produced in response to a first stimulus and rotation about the second axis is produced in response to a second stimulus.
    Type: Application
    Filed: June 1, 2011
    Publication date: March 21, 2013
    Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Sagnik Pal, Huikai Xie, Karl R. Zawoy
  • Publication number: 20120197442
    Abstract: Embodiments of the subject invention relate to a method and apparatus for stabilizing a moveable element of a device. In an embodiment, a device is provided including a base, an element capable of moving relative to the base, and at least one actuator. Each actuator of the at least one actuator is configured such that when the actuator is driven the actuator moves into a hold position, wherein the actuator limits movement of the element. In a particular embodiment, the at least one actuator holds the element, or a portion of the element, at a particular position, angle, and/or attitude. In an embodiment, the at least one actuator is used to limit movement of the element when the device is turned off. The at least one actuator can be positioned to allow greater movement of the element when the device is turned on.
    Type: Application
    Filed: January 26, 2012
    Publication date: August 2, 2012
    Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION INC.
    Inventors: HUIKAI XIE, Karl R. Zawoy
  • Publication number: 20120120643
    Abstract: A solar-powered lighting module is provided, including a solar cell for generating electricity when exposed to light, a battery for storing charge from the generated electricity, and a light generating device powered by the stored charge. In an embodiment, the module further includes a controller that regulates the current transmitted between the components of the module. In a further embodiment, the module is incorporated into an interface to an environmentally controlled space and can be positioned to light an interior portion of the space. In another embodiment, the solar cell and light generating device are transparent to allow light to pass through the interface. In a further embodiment, tinted-color conjugated polymers incorporated into the module limit the spectrum of light that can pass through the interface. In yet another embodiment, a method of modifying an existing interface with such a module is provided.
    Type: Application
    Filed: June 2, 2010
    Publication date: May 17, 2012
    Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Ying S. Meng, Franky So, Jiangeng Xue, Karl R. Zawoy, John R. Reynolds
  • Publication number: 20120116186
    Abstract: Embodiments of the subject invention relate to a method and apparatus for remote evaluation of a subject's emotive and/or physiological state. Embodiments can utilize a device that can be used to determine the emotional and/or physiological state of a subject through the measurement and analysis of vital signs and/or speech. A specific embodiment relates to a device capable of remotely acquiring a subject's physiological and/or acoustic data, and then correlating and analyzing the data to provide an assessment of a subject's emotional and/or physiological state. In a further specific embodiment, the device can acquire such data, correlate and analyze the data, and provide the assessment of the subject's emotional state and/or physiological in real time.
    Type: Application
    Filed: July 20, 2010
    Publication date: May 10, 2012
    Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Rahul Shrivastav, Jenshan Lin, Karl R. Zawoy, Sona Patel
  • Patent number: 5441055
    Abstract: The guidewire extension wire and connector assembly comprises: a guidewire extension wire having a distal end portion including, extending toward a distal end of the guidewire extension wire, a break-away neck, a reduced-in-diameter stub section and a larger-in-diameter distal stub end; an inner sleeve having an inner end fixed to the guidewire extension wire proximally of the break-away neck and an outer end extending to the larger-in-diameter distal stub end; an outer sleeve having an inner end thereof fixed to the larger-in-diameter distal stub end; and, a fixing mechanism within an outer end of the outer sleeve adapted to engage a generally cylindrical reduced-in-diameter proximal stub end of an initially inserted guidewire.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: August 15, 1995
    Assignee: Cordis Corporation
    Inventors: Francisco Ales, Jack C. Conrad, David A. Duvall, Karl R. Zawoy