Patents by Inventor Howard Jerome WALLS
Howard Jerome WALLS 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: 20210338879Abstract: 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: ApplicationFiled: April 30, 2021Publication date: November 4, 2021Inventors: James Lynn Davis, Howard Jerome Walls, Karmann C. Mills, David Edward Dausch
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Patent number: 11047787Abstract: An optical system for particle detection.Type: GrantFiled: April 29, 2020Date of Patent: June 29, 2021Assignee: Research Triangle InstituteInventors: Anthony Clint Clayton, Howard Jerome Walls, Roger H. Pope
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Patent number: 10876145Abstract: An aerosol collection system and method. The system includes a bio-aerosol delivery device configured to supply bioparticles in a gas stream, a moisture exchange device including a partition member coupled to the gas stream and configured to humidify or dehumidify the bioparticles in the gas stream, and an aerosol collection medium downstream from the moisture exchange device and configured to collect the bioparticles. The method includes delivering bioparticles in a gas stream, humidifying or dehumidifying the bioparticles in the gas stream by transport of water across a partition member and into a vapor phase of the gas stream, and collecting the bioparticles by a collection medium.Type: GrantFiled: May 27, 2020Date of Patent: December 29, 2020Inventors: David S. Ensor, Howard Jerome Walls, Karin K. Foarde, Susanne Vera Hering, Steven Russel Spielman
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Publication number: 20200347434Abstract: An aerosol collection system and method. The system includes a bio-aerosol delivery device configured to supply bioparticles in a gas stream, a moisture exchange device including a partition member coupled to the gas stream and configured to humidify or dehumidify the bioparticles in the gas stream, and an aerosol collection medium downstream from the moisture exchange device and configured to collect the bioparticles. The method includes delivering bioparticles in a gas stream, humidifying or dehumidifying the bioparticles in the gas stream by transport of water across a partition member and into a vapor phase of the gas stream, and collecting the bioparticles by a collection medium.Type: ApplicationFiled: May 27, 2020Publication date: November 5, 2020Inventors: David S. Ensor, Howard Jerome Walls, Karin K. Foarde, Susanne Vera Hering, Steven Russel Spielman
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Publication number: 20200340899Abstract: An optical system for particle detection.Type: ApplicationFiled: April 29, 2020Publication date: October 29, 2020Inventors: Anthony Clint Clayton, Howard Jerome Walls, Roger H. Pope
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Patent number: 10767210Abstract: An aerosol collection system and method. The system includes a bio-aerosol delivery device configured to supply bioparticles in a gas stream, a moisture exchange device including a partition member coupled to the gas stream and configured to humidify or dehumidify the bioparticles in the gas stream, and an aerosol collection medium downstream from the moisture exchange device and configured to collect the bioparticles. The method includes delivering bioparticles in a gas stream, humidifying or dehumidifying the bioparticles in the gas stream by transport of water across a partition member and into a vapor phase of the gas stream, and collecting the bioparticles by a collection medium.Type: GrantFiled: June 27, 2019Date of Patent: September 8, 2020Assignee: Research Triangle, Inc.Inventors: David S. Ensor, Howard Jerome Walls, Karin K. Foarde, Susanne Vera Hering, Steven Russel Spielman
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Patent number: 10481070Abstract: Sample monitoring and flow control systems and methods are disclosed for monitoring of airborne particulates. A system may include a particle collection filter. The system also includes a fluid moving device for moving a sample through the particle collection filter. Further, the system includes a light source configured to direct irradiating light towards the particle collection filter. The system also includes a light detector positioned to receive the irradiating light passing through the particle collection filter and configured to generate a signal representative of an amount of the received light. Further, the system includes a controller configured to receive the signal and to control the fluid moving device based on the amount of the received light.Type: GrantFiled: April 30, 2019Date of Patent: November 19, 2019Assignee: Research Triangle InstituteInventors: Anthony Clint Clayton, Howard Jerome Walls, David S. Ensor, Andrei Yurievich Khlystov
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Publication number: 20190330675Abstract: An aerosol collection system and method. The system includes a bio-aerosol delivery device configured to supply bioparticles in a gas stream, a moisture exchange device including a partition member coupled to the gas stream and configured to humidify or dehumidify the bioparticles in the gas stream, and an aerosol collection medium downstream from the moisture exchange device and configured to collect the bioparticles. The method includes delivering bioparticles in a gas stream, humidifying or dehumidifying the bioparticles in the gas stream by transport of water across a partition member and into a vapor phase of the gas stream, and collecting the bioparticles by a collection medium.Type: ApplicationFiled: June 27, 2019Publication date: October 31, 2019Inventors: David S. Ensor, Howard Jerome Walls, Karin K. Foarde, Susanne Vera Hering, Steven Russel Spielman
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Publication number: 20190257737Abstract: Sample monitoring and flow control systems and methods are disclosed for monitoring of airborne particulates. A system may include a particle collection filter. The system also includes a fluid moving device for moving a sample through the particle collection filter. Further, the system includes a light source configured to direct irradiating light towards the particle collection filter. The system also includes a light detector positioned to receive the irradiating light passing through the particle collection filter and configured to generate a signal representative of an amount of the received light. Further, the system includes a controller configured to receive the signal and to control the fluid moving device based on the amount of the received light.Type: ApplicationFiled: April 30, 2019Publication date: August 22, 2019Inventors: Anthony Clint Clayton, Howard Jerome Walls, David S. Ensor, Andrei Yurievich Khlystov
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Patent number: 10378042Abstract: An aerosol collection system and method. The system includes a bio-aerosol delivery device configured to supply bioparticles in a gas stream, a moisture exchange device including a partition member coupled to the gas stream and configured to humidify or dehumidify the bioparticles in the gas stream, and an aerosol collection medium downstream from the moisture exchange device and configured to collect the bioparticles. The method includes delivering bioparticles in a gas stream, humidifying or dehumidifying the bioparticles in the gas stream by transport of water across a partition member and into a vapor phase of the gas stream, and collecting the bioparticles by a collection medium.Type: GrantFiled: February 19, 2013Date of Patent: August 13, 2019Assignee: Research Triangle Institute, Inc.Inventors: David S. Ensor, Howard Jerome Walls, Karin K. Foarde, Susanne Vera Hering, Steven Russel Spielman
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Patent number: 10345216Abstract: Sample monitoring and flow control systems and methods are disclosed for monitoring of airborne particulates. A system may include a particle collection filter. The system also includes a fluid moving device for moving a sample through the particle collection filter. Further, the system includes a light source configured to direct irradiating light towards the particle collection filter. The system also includes a light detector positioned to receive the irradiating light passing through the particle collection filter and configured to generate a signal representative of an amount of the received light. Further, the system includes a controller configured to receive the signal and to control the fluid moving device based on the amount of the received light.Type: GrantFiled: August 20, 2015Date of Patent: July 9, 2019Assignee: Research Triangle InstituteInventors: Anthony Clint Clayton, Howard Jerome Walls, David S. Ensor, Andrei Yurievich Khlystov
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Patent number: 10208331Abstract: A bioparticle collection device and an aerosol collection system. The bioparticle collection device includes a collection medium including a plurality of fibers formed into a fiber mat and configured to collect bioparticles thereon, and includes a viability enhancing material provider disposed in a vicinity of the plurality of fibers and configured to provide a viability enhancing material to the collected bioparticles to maintain viability of the bioparticles collected by the fiber mat. The aerosol collection system includes an aerosol pumping device configured to entrain particles in an gas stream, an aerosol saturation device configured to saturate the particles in the gas stream with a biocompatible liquid, and an aerosol collection medium downstream from the aerosol saturation device and including a plurality of fibers formed into a fiber mat for collection of the saturated aerosol particles.Type: GrantFiled: April 27, 2018Date of Patent: February 19, 2019Assignee: Research Triangle InstituteInventors: David Samuel Ensor, Howard Jerome Walls, Karin K. Foarde
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Patent number: 10188973Abstract: A filtration device including a base filtration material having openings for fluid flow there through and a filtration medium. The filtration medium includes a plurality of patterned nanofibers formed on the base filtration material. The filtration medium has a figure of merit greater than 30 kPa?1, where the figure of merit is given by ?Log (Pt)/?P, where Pt is the fractional penetration of a specific aerosol particle diameter and ?P is a pressure drop across the filtration medium corresponding to a face velocity of 5.3 cm/s and particle size of 0.3 microns.Type: GrantFiled: December 6, 2013Date of Patent: January 29, 2019Assignee: Research Triangle InstituteInventors: Anthony Clint Clayton, Howard Jerome Walls, Adam Joseph Rieth, David Samuel Ensor
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Patent number: 10099165Abstract: A filtration device including a contoured support having 1) an interior surface, 2) an outside peripheral surface spaced farther from a center of the contoured support than the interior surface, and 3) a rim enclosed and sealed to a perimeter of the contoured support. The filtration device includes macroscopic openings in the contoured support extending from the interior surface to the outside peripheral surface, and a plurality of nanofibers having diameters less than 1 micron. The nanofibers are disposed on the outside peripheral surface of the contoured support, and cover the macroscopic openings to form a filtration medium on the contoured support.Type: GrantFiled: December 21, 2015Date of Patent: October 16, 2018Assignee: Research Triangle InstituteInventors: Howard Jerome Walls, Randall J. Newsome, Anthony Clint Clayton, Robert W. Yaga, David Samuel Ensor
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Publication number: 20180245126Abstract: A bioparticle collection device and an aerosol collection system. The bioparticle collection device includes a collection medium including a plurality of fibers formed into a fiber mat and configured to collect bioparticles thereon, and includes a viability enhancing material provider disposed in a vicinity of the plurality of fibers and configured to provide a viability enhancing material to the collected bioparticles to maintain viability of the bioparticles collected by the fiber mat. The aerosol collection system includes an aerosol pumping device configured to entrain particles in an gas stream, an aerosol saturation device configured to saturate the particles in the gas stream with a biocompatible liquid, and an aerosol collection medium downstream from the aerosol saturation device and including a plurality of fibers formed into a fiber mat for collection of the saturated aerosol particles.Type: ApplicationFiled: April 27, 2018Publication date: August 30, 2018Inventors: David Samuel Ensor, Howard Jerome Walls, Karin K. Foarde
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Patent number: 10018551Abstract: A particle detector includes a housing, a light source, and a photo-responsive material. The housing includes a sample inlet and a sample outlet, and encloses a detection cavity. The light source directs irradiating light along a longitudinal axis to particles of a sample fluid flowing in the detection cavity. The photo-responsive material surrounds at least a portion of the detection cavity, and receives measurement light propagating from the particles in a plurality of measurement light paths angled relative to the longitudinal axis. The particle detector may be utilized to measure scattered light and/or light emitted due to autofluorescence. Fluids sampled may include aerosols, bio-aerosols, and liquids.Type: GrantFiled: January 23, 2018Date of Patent: July 10, 2018Assignee: Research Triangle InstituteInventors: Howard Jerome Walls, Anthony Clint Clayton, Randall J. Newsome, Paul G. Hoertz
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Patent number: 9988664Abstract: A bioparticle collection device and an aerosol collection system. The bioparticle collection device includes a collection medium including a plurality of fibers formed into a fiber mat and configured to collect bioparticles thereon, and includes a viability enhancing material provider disposed in a vicinity of the plurality of fibers and configured to provide a viability enhancing material to the collected bioparticles to maintain viability of the bioparticles collected by the fiber mat. The aerosol collection system includes an aerosol pumping device configured to entrain particles in an gas stream, an aerosol saturation device configured to saturate the particles in the gas stream with a biocompatible liquid, and an aerosol collection medium downstream from the aerosol saturation device and including a plurality of fibers formed into a fiber mat for collection of the saturated aerosol particles.Type: GrantFiled: November 24, 2015Date of Patent: June 5, 2018Assignee: Research Triangle InstituteInventors: David Samuel Ensor, Howard Jerome Walls, Karin K Foarde
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Publication number: 20180149578Abstract: A particle detector includes a housing, a light source, and a photo-responsive material. The housing includes a sample inlet and a sample outlet, and encloses a detection cavity. The light source directs irradiating light along a longitudinal axis to particles of a sample fluid flowing in the detection cavity. The photo-responsive material surrounds at least a portion of the detection cavity, and receives measurement light propagating from the particles in a plurality of measurement light paths angled relative to the longitudinal axis. The particle detector may be utilized to measure scattered light and/or light emitted due to autofluorescence. Fluids sampled may include aerosols, bio-aerosols, and liquids.Type: ApplicationFiled: January 23, 2018Publication date: May 31, 2018Inventors: Howard Jerome Walls, Anthony Clint Clayton, Randall J. Newsome, Paul G. Hoertz
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Patent number: 9915600Abstract: A particle detector includes a housing, a light source, and a photo-responsive material. The housing includes a sample inlet and a sample outlet, and encloses a detection cavity. The light source directs irradiating light to particles of a sample fluid flowing in the detection cavity. The photo-responsive material faces the detection cavity, and receives measurement light propagating from the particles in a plurality of measurement light paths angled relative to a longitudinal axis. The particle detector may be utilized to measure scattered light and/or light emitted due to autofluorescence. Fluids sampled may include aerosols, bio-aerosols, and liquids.Type: GrantFiled: February 19, 2016Date of Patent: March 13, 2018Assignee: Research Triangle InstituteInventors: Howard Jerome Walls, Anthony Clint Clayton, Randall J. Newsome, Paul G. Hoertz
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Publication number: 20170268980Abstract: Sample monitoring and flow control systems and methods are disclosed for monitoring of airborne particulates. A system may include a particle collection filter. The system also includes a fluid moving device for moving a sample through the particle collection filter. Further, the system includes a light source configured to direct irradiating light towards the particle collection filter. The system also includes a light detector positioned to receive the irradiating light passing through the particle collection filter and configured to generate a signal representative of an amount of the received light. Further, the system includes a controller configured to receive the signal and to control the fluid moving device based on the amount of the received light.Type: ApplicationFiled: August 20, 2015Publication date: September 21, 2017Inventors: Anthony Clint Clayton, Howard Jerome Walls, David S. Ensor, Andrei Yurievich Khlystov