Patents by Inventor Gregory S. Lewis

Gregory S. Lewis 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).

  • Publication number: 20200124515
    Abstract: Various embodiments include methods of reducing false-particle counts in a water-based condensation particle counter (CPC). One embodiment of a method includes delivering water into one or more wicks, sensing an excess volume of water delivered to the wicks, collecting the excess volume of water into a collection reservoir, and draining the excess volume of water from the collection reservoir. Other methods and apparatuses are disclosed.
    Type: Application
    Filed: October 25, 2019
    Publication date: April 23, 2020
    Inventors: Sreenath Avula, Richard Remiarz, George John Chancellor, Tyler Anderson, Daniel C. Bjorkquist, Robert Caldow, Sean Morell, Frederick R. Quant, Susanne V. Hering, Gregory S. Lewis
  • Patent number: 10520414
    Abstract: Various embodiments include methods of reducing false-particle counts in a water-based condensation particle counter (CPC). One embodiment of a method includes delivering water into one or more wicks, sensing an excess volume of water delivered to the wicks, collecting the excess volume of water into a collection reservoir, and draining the excess volume of water from the collection reservoir. Other methods and apparatuses are disclosed.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: December 31, 2019
    Assignee: TSI Incorporated
    Inventors: Sreenath Avula, Richard Remiarz, George John Chancellor, Tyler Anderson, Daniel C. Bjorkquist, Robert Caldow, Sean Morell, Frederick R. Quant, Susanne V. Hering, Gregory S. Lewis
  • Patent number: 10502665
    Abstract: The present invention relates to systems and methods for collecting and analyzing bioaerosols, including exhaled breath aerosol from a subject. The collection system comprises an inlet portion configured to receive a gaseous fluid containing water vapor and aerosol particles. A primary passage for gaseous fluid flow is in fluid communication with the inlet portion and configured to channel the gaseous fluid flow therethrough. An outlet portion is in fluid communication with the primary passage. A sample collection region is provided, which is configured to receive from the outlet portion aerosol particles from the gaseous fluid, wherein the aerosol particles are impacted onto a layer of ice.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: December 10, 2019
    Assignees: University of Maryland, College Park, Aerosol Dynamics, Inc.
    Inventors: Donald K. Milton, Somayeh Youssefi, Susanne V. Hering, Gregory S. Lewis
  • Patent number: 10488314
    Abstract: Various embodiments include methods of reducing false-particle counts in a water-based condensation particle counter (CPC). One embodiment of a method includes delivering water into one or more wicks, sensing an excess volume of water delivered to the wicks, collecting the excess volume of water into a collection reservoir, and draining the excess volume of water from the collection reservoir. Other methods and apparatuses are disclosed.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: November 26, 2019
    Assignee: TSI Incorporated
    Inventors: Sreenath Avula, Richard Remiarz, George John Chancellor, Tyler Anderson, Daniel C. Bjorkquist, Robert Caldow, Sean Morell, Frederick R. Quant, Susanne V. Hering, Gregory S. Lewis
  • Patent number: 10449003
    Abstract: An individualized preoperative planning system for fracture fixation constructs provides fracture assessment before automatically performing finite element simulations to generate biomechanics associated with a large number of fracture fixation construct design alternatives. Data visualization utilizing multivariate plots or surrogate modeling based on the simulation results are then provided to surgeons enabling surgeons to view, adjust and optimize their fracture fixation construct designs.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: October 22, 2019
    Assignee: The Penn State Research Foundation
    Inventors: John Spence Reid, Gregory S. Lewis
  • Publication number: 20180214073
    Abstract: A device for and a method of monitoring the healing status of a fractured bone in a person's limb is disclosed. The external fixation device may include one or more rods or struts that incorporate strain gauges designed to measure the mechanical forces on the strut when force is applied to the fractured bone. The mechanical force data may be collected by an electronic module and transmitted to a computer for statistical analysis. The device may also include a foot insole sensor for measuring the foot plantar force to normalize the data collected by an external fixation device attached to a person's leg. The method of measuring the healing status of a fractured bone includes measuring the changes in mechanical forces exerted on the one or more struts, and based on the measurements, estimating the healing status of the bone.
    Type: Application
    Filed: January 17, 2018
    Publication date: August 2, 2018
    Inventors: GREGORY S. LEWIS, J. SPENCE REID
  • Publication number: 20180168731
    Abstract: An individualized preoperative planning system for fracture fixation constructs provides fracture assessment before automatically performing finite element simulations to generate biomechanics associated with a large number of fracture fixation construct design alternatives. Data visualization utilizing multivariate plots or surrogate modeling based on the simulation results are then provided to surgeons enabling surgeons to view, adjust and optimize their fracture fixation construct designs.
    Type: Application
    Filed: May 31, 2016
    Publication date: June 21, 2018
    Inventors: John Spence Reid, Gregory S. Lewis
  • Publication number: 20180045636
    Abstract: Various embodiments include methods of reducing false-particle counts in a water-based condensation particle counter (CPC). One embodiment of a method includes delivering water into one or more wicks, sensing an excess volume of water delivered to the wicks, collecting the excess volume of water into a collection reservoir, and draining the excess volume of water from the collection reservoir. Other methods and apparatuses are disclosed.
    Type: Application
    Filed: February 23, 2016
    Publication date: February 15, 2018
    Inventors: Sreenath AVULA, Richard REMIARZ, George John CHANCELLOR, Tyler ANDERSON, Daniel C. BJORKQUIST, Robert CALDOW, Sean MORELL, Frederick R. QUANT, Susanne V. HERING, Gregory S. LEWIS
  • Patent number: 9821263
    Abstract: This technology relates to the enlargement by water condensation in a laminar flow of airborne particles with diameters of the order of a few nanometers to hundreds of nanometers to form droplets with diameters of the order of several micrometers. The technology presents several advanced designs, including the use of double-stage condensers. It has application to measuring the number concentration of particles suspended in air or other gas, to collecting these particles, or to focusing these particles.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: November 21, 2017
    Assignee: AEROSOL DYNAMICS INC.
    Inventors: Susanne V. Hering, Gregory S. Lewis, Steven R. Spielman
  • Patent number: 9658139
    Abstract: A system and a method is described herein for the collection of small particles in a concentrated manner, whereby particles are deposited onto a solid surface or collected into a volume of liquid. The collected samples readily interface to any of a number of different elemental, chemical, or biological or other analysis techniques.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: May 23, 2017
    Assignees: TSI INCORPORATED, AEROSOL DYNAMICS INC.
    Inventors: Susanne V. Hering, Gregory S. Lewis, Arantzazu Eiguren Fernandez, Frederick Quant, Kenneth R. Farmer, II
  • Publication number: 20150075372
    Abstract: This technology relates to the enlargement by water condensation in a laminar flow of airborne particles with diameters of the order of a few nanometers to hundreds of nanometers to form droplets with diameters of the order of several micrometers. The technology presents several advanced designs, including the use of double-stage condensers. It has application to measuring the number concentration of particles suspended in air or other gas, to collecting these particles, or to focusing these particles.
    Type: Application
    Filed: June 27, 2014
    Publication date: March 19, 2015
    Inventors: Susanne V. Hering, Gregory S. Lewis, Steven R. Spielman
  • Patent number: 8801838
    Abstract: This technology relates to the enlargement by water condensation in a laminar flow of airborne particles with diameters of the order of a few nanometers to hundreds of nanometers to form droplets with diameters of the order of several micrometers. The technology presents several advanced designs, including the use of double-stage condensers. It has application to measuring the number concentration of particles suspended in air or other gas, to collecting these particles, or to focusing these particles.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: August 12, 2014
    Assignee: Aerosol Dynamics Inc.
    Inventors: Susanne V. Hering, Gregory S. Lewis, Steven R. Spielman
  • Publication number: 20140060155
    Abstract: A system and a method is described herein for the collection of small particles in a concentrated manner, whereby particles are deposited onto a solid surface or collected into a volume of liquid. The collected samples readily interface to any of a number of different elemental, chemical, or biological or other analysis techniques.
    Type: Application
    Filed: August 28, 2013
    Publication date: March 6, 2014
    Applicant: TSI Incorporated
    Inventors: Susanne V. Hering, Gregory S. Lewis, Arantzazu Eiguren Fernandez, Frederick Quant, Kenneth R. Farmer
  • Patent number: 8528599
    Abstract: A pulse width modulated solenoid system having low noise characteristics is described. Noise reduction is primarily achieved by separating the solenoid device from the insulator and the manifold housing through the use of rubber isolators and multiple sets of o-rings, thus preventing metal to metal contact. Additional noise reduction is achieved by encapsulating all of the solenoids, using the insulator, the cover plate, the housing, and the screen carrier. Noise levels are also further reduced by minimizing the impact force of the armature against the sleeve by allowing fluid to vent into the upper area of the sleeve, thus causing a dampening effect.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: September 10, 2013
    Assignee: BorgWarner Inc.
    Inventors: Kenneth W. Morgan, Thomas J. Hemak, Aaron Wolfson, Thomas A. Horn, Gregory S. Lewis, Howard Saxon
  • Publication number: 20120048112
    Abstract: This technology relates to the enlargement by water condensation in a laminar flow of airborne particles with diameters of the order of a few nanometers to hundreds of nanometers to form droplets with diameters of the order of several micrometers. The technology presents several advanced designs, including the use of double-stage condensers. It has application to measuring the number concentration of particles suspended in air or other gas, to collecting these particles, or to focusing these particles.
    Type: Application
    Filed: August 25, 2011
    Publication date: March 1, 2012
    Inventors: Susanne V. Hering, Gregory S. Lewis, Steven R. Spielman
  • Publication number: 20110095095
    Abstract: Technology is presented for the high efficiency concentration of fine and ultrafine airborne particles into a small fraction of the sampled airflow by condensational enlargement, aerodynamic focusing and flow separation. A nozzle concentrator structure including an acceleration nozzle with a flow extraction structure may be coupled to a containment vessel. The containment vessel may include a water condensation growth tube to facilitate the concentration of ultrafine particles. The containment vessel may further include a separate carrier flow introduced at the center of the sampled flow, upstream of the acceleration nozzle of the nozzle concentrator to facilitate the separation of particle and vapor constituents.
    Type: Application
    Filed: October 22, 2010
    Publication date: April 28, 2011
    Applicant: AEROSOL DYNAMICS INC.
    Inventors: Susanne V. Hering, Gregory S. Lewis, Steven R. Spielman
  • Patent number: 7575220
    Abstract: Embodiments of an apparatus for sealing a substrate transfer passage in a chamber are provided. In one embodiment, an apparatus for sealing a substrate transfer passage in a chamber includes an elongated door member having a convex sealing face and a backside. In another embodiment, a chamber having an apparatus for sealing a substrate transfer passage is provided that includes a chamber body having an interior volume, at least one substrate access defined through the chamber body configured to allow passage of a large area substrate therethrough, and a door member having a convex sealing face moveable between a first position that covers the substrate transfer port and a second position clear of the substrate transfer port. In yet another embodiment, the chamber body may be a load lock chamber.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: August 18, 2009
    Assignee: Applied Materials, Inc.
    Inventors: Yoshiaki Tanase, Billy C. Leung, Gregory S. Lewis, David E. Berkstresser
  • Patent number: 7572402
    Abstract: A method is provided for the punching of a bridge break and thereafter sealing the bridge break during the injection molding process of the lead frame. The bridge breaking tool is placed over the bridge that is to be broken. The collar presses down on the circuit and the punch presses down on the bridge with enough force to form the bridge break. Once the bridge break is formed the punch is retracted from the cavity of the template and molten polymer is injected to flow around the ends of the bridge break. The bridge breaking tool's hold down collars and retracted punch form a molding area for molten polymer to flow over the bridge break and the exposed circuit area. The bridge breaking tool is retracted after the bridge break is encased in the cured molten polymer and the cured molten polymer forms a lead frame structure.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: August 11, 2009
    Assignee: BorgWarner Inc.
    Inventors: Steven J. Roskowski, Kenneth W. Morgan, Gregg W. Petrosky, Gregory S. Lewis
  • Publication number: 20080083274
    Abstract: An apparatus and method for producing a region of vapor super-saturation and particle growth in a laminar flow by surrounding the particle flow with a saturated or super-saturated sheath flow from which vapor diffuses into the aerosol flow. This method is applicable when the mass diffusivity of the condensing vapor is greater than the thermal diffusivity of the carrier gas, such as is the case when water vapor diffuses into air.
    Type: Application
    Filed: October 5, 2007
    Publication date: April 10, 2008
    Inventors: Susanne V. Hering, Gregory S. Lewis
  • Patent number: 7149178
    Abstract: A system and method for reading and writing in a multilevel optical data system is disclosed. The system provides control signals for timing acquisition, level calibration, DC control, AGC, equalizer training and data synchronization. The user data is ECC protected and optionally convolutionally encoded before being combined with the control signals in an information block. The multilevel information block can be written to an optical disc as a series of multilevel marks. The optical disc may also contain an Address in Pregroove signal (AIP) to facilitate synchronization during writing of an information block. The AIP signal has an integer number of address frames per information block.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: December 12, 2006
    Assignee: LSI Logic Corporation
    Inventors: Terrence L. Wong, Gregory S. Lewis, David C. Lee, Yi Ling, Stephen P. Pope, Steven R. Spielman, Jonathan A. Zingman