Patents by Inventor James Lynn Davis

James Lynn Davis 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: 20210338879
    Abstract: An air filtration media with integrated disinfection capability. The media has a collection filter for capture of pathogens, and an ultraviolet (UV) radiation source integrated into the collection filter such that the pathogens collected by the collection filter are exposed to UV radiation from the UV radiation source.
    Type: Application
    Filed: April 30, 2021
    Publication date: November 4, 2021
    Inventors: James Lynn Davis, Howard Jerome Walls, Karmann C. Mills, David Edward Dausch
  • Patent number: 10948348
    Abstract: A mannikin-based optical analyzer for analyzing an exposure of a subject to an environmental lighting condition. The analyzer has a mannikin with an outer surface replicating a facial profile of the subject, an interior inside the outer surface, and at least one pupil for admission of light into the interior of the mannikin. The analyzer has at least one optical detector configured to acquire and wavelength analyze light directed through the at least one pupil.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: March 16, 2021
    Assignee: RESEARCH TRIANGLE INSTITUTE
    Inventors: Kelley Jo Rountree, James Lynn Davis, Karmann Cressman Mills, Georgiy Bobashev, Robert Furberg, Anthony Clint Clayton
  • Publication number: 20200072669
    Abstract: A mannikin-based optical analyzer for analyzing an exposure of a subject to an environmental lighting condition. The analyzer has a mannikin with an outer surface replicating a facial profile of the subject, an interior inside the outer surface, and at least one pupil for admission of light into the interior of the mannikin. The analyzer has at least one optical detector configured to acquire and wavelength analyze light directed through the at least one pupil.
    Type: Application
    Filed: August 30, 2019
    Publication date: March 5, 2020
    Inventors: Kelley Jo Rountree, James Lynn Davis, Karmann Cressman Mills, Georgiy Bobashev, Robert Furberg, Anthony Clint Clayton
  • Patent number: 10196308
    Abstract: A cementing method includes positioning a bottom plug at a casing shoe, rupturing the bottom plug, signaling when a top plug reaches a target position, and releasing a chemical into a cement slurry below the top plug in response to the signaling. The signal may comprise a mechanical trigger changing its position due to movement of the top plug past the target position.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: February 5, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Vijay Gupta, Mark Roberson, David F. Myers, James Lynn Davis, David Dausch
  • Publication number: 20180029938
    Abstract: A cementing method includes positioning a bottom plug at a casing shoe, rupturing the bottom plug, signaling when a top plug reaches a target position, and releasing a chemical into a cement slurry below the top plug in response to the signaling. The signaling or releasing involves an electronic signaling interface included with the bottom plug and/or the top plug. A cementing system includes a top plug position interface that identifies when a top plug reaches a target position relative to a bottom plug and a chemical release interface that releases a chemical into a cement slurry below the top plug. The top plug position interface or the chemical release interface include an electronic signaling interface integrated with at least one of the top plug and a bottom plug.
    Type: Application
    Filed: March 17, 2015
    Publication date: February 1, 2018
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Vijay Gupta, Mark Roberson, David F. Myers, James Lynn Davis, David Dausch
  • Patent number: 9562671
    Abstract: A lighting device (100) includes a housing (104) enclosing a housing interior (108), a light source (132), a light converter (136), and a color tuning device. The light source is configured for emitting a primary light beam of a primary wavelength (140) through the housing interior. The light converter includes a luminescent material (144) facing the housing interior and configured for emitting secondary light (156, 158) of one or more wavelengths different from the primary wavelength, in response to excitation by the primary light beam. The housing includes a light exit (124) for outputting a combination of primary light and secondary light. The color tuning device is configured for adjusting a position of the primary light beam relative to the luminescent material.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: February 7, 2017
    Assignee: Research Triangle Institute
    Inventor: James Lynn Davis
  • Patent number: 9441811
    Abstract: A lighting device (100) includes a housing (104), a light converter (136), one or more light sources (132), and one or more optical waveguides (160). The housing includes a light exit (124) for outputting a combination of primary light (140) and secondary light (156,158). The light source emits a primary light beam of a primary wavelength. The optical waveguide includes an input end (162) optically coupled to the light source, and an output end (164) facing a housing interior (108) and positioned at an angle to an axial direction through the housing interior. The optical waveguide directs the primary light beam from the light source, through the housing interior and toward a luminescent material of the light converter. The luminescent material emits secondary light of one or more wavelengths different from the primary wavelength in response to excitation by the primary light beam. The light source may be mounted outside the housing interior so as not to obstruct light propagation.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: September 13, 2016
    Assignee: Research Triangle Institute
    Inventors: Michael Lamvik, James Lynn Davis, Brent Thomas Ward
  • Patent number: 9228716
    Abstract: A fiber-based reflective lighting device and a housed lighting device. The fiber-based reflective lighting device which includes a source configured to generate a primary light, and a substrate having a nanocomposite mat of reflective fibers having a diameter less than 1,000 nm which diffusively reflects light upon illumination with at least the primary light. The nanocomposite mat includes a reflectance-enhancing coating conformally disposed around an outer surface of the fibers, having a refractive index different from the reflective fibers, and which increases a reflectance of the substrate in the visible spectrum. The lighting device includes a light exit configured to emanate the reflected light. The housed lighting device includes a housing, a source configured to generate primary light and direct the primary light into the housing, the reflective nanocomposite mat of reflective fibers, and a light exit in the housing configured to emanate the reflected light from the housing.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: January 5, 2016
    Assignee: RESEARCH TRIANGLE INSTITUTE
    Inventors: James Lynn Davis, Kimberly A. Guzan, Karmann C. Mills, Michael K. Lamvik, James F. Bittle, Laura Haines
  • Patent number: 9101036
    Abstract: A photoluminescent nanofiber composite includes a nanofiber substrate, first luminescent particles, and second luminescent particles. The first luminescent particles are supported by the nanofibers and span at least a portion of a substrate surface, as a layer on the substrate surface, or with some particles located in a bulk of the substrate, or both. The second luminescent particles are disposed on the substrate. The second luminescent particles may be disposed directly on the substrate surface or on the first luminescent particles. The second luminescent particles may be deposited in a pattern of deposition units. The first and second luminescent particles are configured for emitting light of different respective wavelengths in response to excitation by a light beam. One or more surface treatment coatings may be provided at different locations.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: August 4, 2015
    Assignee: Research Triangle Institute
    Inventors: Kimberly A. Guzan, Karmann C. Mills, Li Han, James Lynn Davis, Paul G. Hoertz
  • Patent number: 8884507
    Abstract: A fiber-based reflective lighting device and a lighting device. The fiber-based reflective lighting device includes a source configured to generate a primary light, a mat of reflective fibers which diffusely reflects light upon illumination with at least the primary light, and a light exit configured to emanate the reflected light. The lighting device includes a housing, a source configured to generate primary light and direct the primary light into the housing, a reflective mat of fibers disposed inside the housing at a position to reflect the primary light, and a light exit in the housing configured to emanate the reflected light from the housing.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: November 11, 2014
    Assignee: Research Triangle Institute
    Inventors: James Lynn Davis, Howard J. Walls, Karmann Mills, Vijay Gupta, Michael Kasper Lamvik
  • Patent number: 8864341
    Abstract: A fiber-based reflective lighting device. The lighting device includes a source configured to generate a primary light, a substrate including a mat of reflective nanofibers, and a light exit configured to emanate the reflected light. The fibers have an average fiber diameter AFD less than 500 nm which diffusively reflects visible light upon illumination with at least the primary light. The mat has a basis weight less than 40 gram per square meter (gsm) and a reflectance greater than 80%.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: October 21, 2014
    Assignee: Research Triangle Institute
    Inventors: James Lynn Davis, Larry Charles Michael, Karmann C. Mills
  • Patent number: 8851693
    Abstract: A stimulated lighting device for stimulatable light emission including a luminescent sheet including light stimulatable particles which emit secondary light upon receiving primary light. The lighting device includes a source configured to generate and direct the primary light obliquely onto the luminescent sheet, at least one reflector configured to reflect at least a part of the primary light and a part of the secondary light onto the luminescent sheet and configured to reflect at least a part of scattered primary light and a part of the secondary light from the luminescent sheet toward the light exit, and a light exit configured to emanate light as a combination of the primary light and the secondary light.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: October 7, 2014
    Assignee: Research Triangle Institute
    Inventors: Michael Kasper Lamvik, James Lynn Davis
  • Patent number: 8847487
    Abstract: A device for stimulable light emission that includes a fiber mat of nanofibers having an average fiber diameter in a range between 100 and 2000 nm, and includes plural stimulable particles disposed in association with the nanofibers. The stimulable particles produce secondary light emission upon receiving primary light at a wavelength ?. The average fiber diameter is comparable in size to the wavelength ? in order to provide scattering sites within the fiber mat for the primary light. Various methods for making suitable luminescent nanofiber mats include: electrospinning a polymer solution including or not including the stimulable particles and forming from the electrospun solution nanofibers having an average fiber diameter between 100 and 2000 nm. Methods, which electrospin without the stimulable particles, introduce the stimulable particles during electrospinning or after electrospinning to the fibers and therefore to the resultant fiber mat.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: September 30, 2014
    Assignee: Research Triangle Insitute
    Inventors: James Lynn Davis, Anthony L. Andrady, David S. Ensor, Li Han, Howard J. Walls
  • Publication number: 20140160723
    Abstract: A fiber-based reflective lighting device. The lighting device includes a source configured to generate a primary light, a substrate including a mat of reflective nanofibers, and a light exit configured to emanate the reflected light. The fibers have an average fiber diameter AFD less than 500 nm which diffusively reflects visible light upon illumination with at least the primary light. The mat has a basis weight less than 40 gram per square meter (gsm) and a reflectance greater than 80%.
    Type: Application
    Filed: December 11, 2013
    Publication date: June 12, 2014
    Applicant: Research Triangle Institute
    Inventors: James Lynn Davis, Larry Charles Michael, Karmann C. Mills
  • Patent number: 8714776
    Abstract: A method for producing a fiber membrane of nanofibers that have both smooth and porous surface features. The method includes materials processing using polymer mixes with solvents and melt polymers with additives. The method includes nanomaterial incorporation onto a fiber structure after formation of the fiber structure. The fiber structure can be a part of a nanoparticle carrier material, a nanoparticle disposal medium, a lighting medium, and a catalysis medium.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: May 6, 2014
    Assignee: Research Triangle Institute
    Inventors: Li Han, Anthony L. Andrady, James Lynn Davis
  • Publication number: 20140119026
    Abstract: A fiber-based reflective lighting device and a housed lighting device. The fiber-based reflective lighting device which includes a source configured to generate a primary light, and a substrate having a nanocomposite mat of reflective fibers having a diameter less than 1,000 nm which diffusively reflects light upon illumination with at least the primary light. The nanocomposite mat includes a reflectance-enhancing coating conformally disposed around an outer surface of the fibers, having a refractive index different from the reflective fibers, and which increases a reflectance of the substrate in the visible spectrum. The lighting device includes a light exit configured to emanate the reflected light. The housed lighting device includes a housing, a source configured to generate primary light and direct the primary light into the housing, the reflective nanocomposite mat of reflective fibers, and a light exit in the housing configured to emanate the reflected light from the housing.
    Type: Application
    Filed: June 1, 2012
    Publication date: May 1, 2014
    Applicant: RESEARCH TRIANGLE INSTITUTE
    Inventors: James Lynn Davis, Kimberly A. Guzan, Karmann C. Mills, Michael K. Lamvik, James F. Bittle, Laura Haines
  • Patent number: 8684082
    Abstract: The present invention includes methods relating to the setting of fluids or slurries in a wellbore. In one embodiment, a method of isolating a portion a wellbore by preparing a sealant composition comprising a fluid component and a polymeric additive component, placing the sealant composition into a wellbore and subjecting the sealant composition to ionizing radiation. The ionizing radiation can cause bonding between polymeric additive components and create a polymer matrix within the sealant composition that increases the mechanical strength of the sealant composition.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: April 1, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Samuel J. Lewis, Gary Funkhouser, Paul Hoertz, David F. Myers, James Lynn Davis, Vikram Rao, Vijay Gupta, Lynn Margaret Soby
  • Patent number: 8662174
    Abstract: The present invention includes methods and compositions relating to the setting of fluids or slurries in a wellbore. In one embodiment, a method of isolating a portion a wellbore includes preparing a sealant composition having a fluid component, a polymeric additive constituent, and a set modifier component. The sealant composition is placed into a wellbore and subjected to ionizing radiation. The ionizing radiation can cause bonding between polymeric additive constituents and create a polymer matrix within the sealant composition that increases the mechanical strength of the sealant composition. The ionizing radiation also alters the set modifier component, triggering the thickening of the sealant composition.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: March 4, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Samuel J. Lewis, Gary Funkhouser, Anthony Badalamenti, Vikram Rao, David F. Myers, Vijay Gupta, James Lynn Davis, Michael Lamvik, Paul G. Hoertz, Lynn Margaret Soby, Andrew K. Dummer
  • Publication number: 20130308334
    Abstract: A device for stimulable light emission that includes a fiber mat of nanofibers having an average fiber diameter in a range between 100 and 2000 nm, and includes plural stimulable particles disposed in association with the nanofibers. The stimulable particles produce secondary light emission upon receiving primary light at a wavelength ?. The average fiber diameter is comparable in size to the wavelength ? in order to provide scattering sites within the fiber mat for the primary light. Various methods for making suitable luminescent nanofiber mats include: electrospinning a polymer solution including or not including the stimulable particles and forming from the electrospun solution nanofibers having an average fiber diameter between 100 and 2000 nm. Methods, which electrospin without the stimulable particles, introduce the stimulable particles during electrospinning or after electrospinning to the fibers and therefore to the resultant fiber mat.
    Type: Application
    Filed: July 10, 2013
    Publication date: November 21, 2013
    Applicant: RESEARCH TRIANGLE INSTITUTE
    Inventors: James Lynn DAVIS, Anthony L. Andrady, David S. Ensor, Li Han, Howard J. Walls
  • Publication number: 20130241435
    Abstract: A lighting device (100) includes a housing (104), a light converter (136), one or more light sources (132), and one or more optical waveguides (160). The housing includes a light exit (124) for outputting a combination of primary light (140) and secondary light (156,158). The light source emits a primary light beam of a primary wavelength. The optical waveguide includes an input end (162) optically coupled to the light source, and an output end (164) facing a housing interior (108) and positioned at an angle to an axial direction through the housing interior. The optical waveguide directs the primary light beam from the light source, through the housing interior and toward a luminescent material of the light converter. The luminescent material emits secondary light of one or more wavelengths different from the primary wavelength in response to excitation by the primary light beam. The light source may be mounted outside the housing interior so as not to obstruct light propagation.
    Type: Application
    Filed: August 19, 2011
    Publication date: September 19, 2013
    Applicant: RESEARCH TRIANGLE INSTITUTE, INTERNATIONAL
    Inventors: Michael Kasper Lamvik, James Lynn Davis, Brent Thomas Ward