Patents by Inventor David Mathews

David Mathews 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: 10562059
    Abstract: A controlled-volume spray deposition system has a fluid feed system including a pair of bi-directional, counter-rotating rollers to dispense fluid as a first surface, the rollers operable to rotate in a first direction to dispense the fluid, a second surface positioned to receive the fluid when the rollers rotate in the first direction, and the rollers operable to rotate in a second direction to retract the fluid to cause the fluid to stretch and form a filament until it breaks to form a spray. A method of generating a controlled-volume spray includes feeding fluid between two counter-rotating rollers as a first surface as they rotate in a first direction until the fluid contacts a second surface, reversing the counter-rotating rollers such that they pull the fluid to form a fluid filament, and causing the filament to break into a spray.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: February 18, 2020
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Victor Beck, David Mathew Johnson
  • Publication number: 20200024487
    Abstract: A composition of matter includes a first compatible material having particles containing chemical elements similar to a first substrate, and second compatible material having particles containing chemical elements similar to a second substrate, wherein the first substrate and the second substrate are chemically different. The particles are dispersed into a matrix that is in between the first and the second substrate. A deposition system has a multi-material printhead, a first reservoir of a first compatible material having particles containing chemical elements similar to a first substrate, a second reservoir of a second compatible material having particles containing chemical elements similar to a second substrate, a third reservoir of an polymer precursor material, and at least one mixer.
    Type: Application
    Filed: July 23, 2018
    Publication date: January 23, 2020
    Inventors: GABRIEL IFTIME, DAVID MATHEW JOHNSON, JESSICA LOUIS BAKER RIVEST
  • Publication number: 20200024494
    Abstract: A pair of bonded substrates having a first substrate of a first material, a second substrate of the first material, and an adhesive bonding the first substrate to the second substrate, wherein the adhesive has chemically linked compatibilizing particles compatible with the first and second substrates. A composition of matter has an adhesive having a chemically linked particle network forming a bond between a first substrate and a second substrate, wherein compatibilizing particles in the particle network are compatible with the first and second substrates. A method of joining two structures of identical materials includes preparing first and second structures to expose bare material, applying an adhesive to the bare material on the first and second structures, the adhesive containing compatibilizing particles compatible with the material and the preparing allows interaction between the material and the compatibilizing particles, and curing the adhesive.
    Type: Application
    Filed: July 23, 2018
    Publication date: January 23, 2020
    Inventors: GABRIEL IFTIME, JESSICA LOUIS BAKER RIVEST, DAVID MATHEW JOHNSON, JUNHUA WEI, EUGENE SHIN MING BEH
  • Publication number: 20200016885
    Abstract: Ink-based digital printing systems useful for ink printing include a photoreceptor layer configured to receive a layer of liquid immersion fluid. The liquid immersion fluid includes dampening fluid, dispersed gas particles, and charge directors that impart charge to the solid particles. The photoreceptor surface is charged to a uniform potential, and selectively discharged using an ROS according to image data to form an electrostatic latent image. The charged liquid immersion fluid adheres to portions of the photoreceptor surface according to the electrostatic latent image to form a fountain solution image. The fluid portion of the fountain solution image can be partially transferred to an imaging member and/or transfer member to form a dampening fluid image, either or both of which may be electrically biased. The dampening fluid image is inked on the transfer member, and the resulting ink image transferred to a print substrate.
    Type: Application
    Filed: July 11, 2018
    Publication date: January 16, 2020
    Inventors: Antonio St. Clair Lloyd WILLIAMS, David K. BIEGELSEN, David Mathew JOHNSON
  • Patent number: 10526718
    Abstract: The present invention relates to the field of plating, including, but not limited to electroplating metallic articles, for example metallic discs that can be used as, or converted into, coins. Embodiments of the present invention described herein incorporate luminescent particles into plated metallic layers so that they can be detected for security purposes.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: January 7, 2020
    Assignee: The Royal Mint Limited
    Inventors: David Mathew James, Ellis Rhys Thomas, Gwilym Hibbert
  • Patent number: 10500784
    Abstract: An additive deposition system and method, the system including generating an aerosol of additive material that is charged and deposited onto a selectively charged substrate. Selectively charging the substrate includes uniformly charging a surface of the substrate, selectively removing charged from the substrate to create charged and neutral regions of the substrate surface. The charged regions of the substrate having a polarity opposite a polarity of the charged aerosol. The charged aerosol of additive material deposited onto the selectively charged portions of the substrate surface due to the potential difference between the charged substrate and charged aerosol. The system and method further including repeating the additive deposition process to create a multi-layer matrix of additive material.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: December 10, 2019
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: David Mathew Johnson, Victor Alfred Beck, Scott A. Elrod, David K. Biegelsen
  • Patent number: 10493483
    Abstract: A roller has an outer cylindrical surface having an array of holes, a central feed channel inside the roller, and vanes connecting the channel to the holes, forming a path for liquid between the channel and the holes. An atomization system having a fluid reservoir; a pair of rollers, at least one of the rollers having: a central feed channel, the channel fluidically connected to the fluid reservoir, an array of holes on a surface of the roller, and vanes connecting the channels to the holes, a nip formed between the rollers, and a receiving surface positioned to receive droplets formed when liquid exits the holes, stretches between the rollers as they counterrotate to form filaments and the filaments break into droplets.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: December 3, 2019
    Assignee: Palo Alto Research Center Incorporated
    Inventor: David Mathew Johnson
  • Patent number: 10485241
    Abstract: A device for applying liquid flavors to collagen casing is provided. In one embodiment, the device comprises a cup and a roller for applying liquid flavor to the surface of the collagen casing prior to drying. In another embodiment, the device comprises an applicator having a base plate with a first hole in the base plate to allow the collagen casing to pass through the base plate, a second hole in the base plate in fluid communication with the first hole to inject liquid flavor through the second hole into contact with the collagen casing as it passes through the first hole, a wiper removably attached to the base plate to wipe excess liquid flavor from the surface of the collagen casing, and a liquid flavor injection line attached to the second hole in the base plate. In some embodiments, the cup and roller are combined with the applicator to apply the liquid flavor.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: November 26, 2019
    Assignee: NITTA CASINGS INC.
    Inventors: Eugene Goldfarb, David Mathews, Masaya Shinoda
  • Publication number: 20190352216
    Abstract: An apparatus comprises a stressed glass member and an actuator mounted on the stressed glass member. A power source is coupled to the actuator. An abrasion structure is disposed between the actuator and the stressed glass member. The abrasion structure comprises abrading features in contact with the stressed glass member. The abrading features have a hardness higher than a hardness of the stressed glass member. When energized by the power source, the actuator is configured to induce movement of the abrasion structure that causes the abrading features to create scratches in the stressed glass member to a depth sufficient to initiate fracture of the stressed glass member.
    Type: Application
    Filed: May 16, 2018
    Publication date: November 21, 2019
    Inventors: Kathryn Murphy, Scott J. Limb, David Mathew Johnson
  • Patent number: 10434703
    Abstract: An additive deposition system and method, the system including generating an aerosol of additive material that is charged and deposited onto a selectively charged substrate. Selectively charging the substrate includes uniformly charging a surface of the substrate, selectively removing charged from the substrate to create charged and neutral regions of the substrate surface. The charged regions of the substrate having a polarity opposite a polarity of the charged aerosol. The charged aerosol of additive material deposited onto the selectively charged portions of the substrate surface due to the potential difference between the charged substrate and charged aerosol. The system and method further including repeating the additive deposition process to create a multi-layer matrix of additive material.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: October 8, 2019
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: David Mathew Johnson, Victor Alfred Beck, Scott A. Elrod, David K. Biegelsen
  • Patent number: 10393414
    Abstract: A flexible temperature management device that uses powered thermoelectric elements to transfer thermal energy between a user and the environment to thermally regulate the user.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: August 27, 2019
    Assignee: Palo Alto Research Center Incorporated
    Inventors: David Mathew Johnson, Corie Lynn Cobb
  • Patent number: 10391706
    Abstract: A method of creating a three-dimensional object includes generating a spray from a fluid by stretching the fluid between two diverging surfaces into a fluid filament until the fluid filament breaks into a plurality of droplets and forms the spray, entraining the spray in a carrier gas flow, directing the carrier gas flow toward a target surface through a multi-nozzle array, and repeatedly applying the carrier gas flow on a target surface to form the three-dimensional object by controlling the direction of the carrier gas flow toward the target surface.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: August 27, 2019
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: David Mathew Johnson, Armin R. Volkel, Victor Beck, John Steven Paschkewitz
  • Patent number: 10384432
    Abstract: A method of manufacturing a hierarchical laminate including forming a first hierarchical film, coating the first hierarchical film with an adhesive, stacking a second hierarchical film on the first hierarchical film, and curing the adhesive. A laminate structure has at least two electrohydrodynamic patterned film layers, the at least two layers being aligned and bonded.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: August 20, 2019
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: Corie Lynn Cobb, David Mathew Johnson
  • Publication number: 20190247572
    Abstract: Embodiments of the present invention provide a vent arrangement integrated with a refill port disposed on the outer shell of an implantable drug-delivery device. The vent arrangement may utilize a tiered structure with two septums in a space-efficient configuration that facilitates both venting of pressure and refill of the drug reservoir.
    Type: Application
    Filed: April 26, 2019
    Publication date: August 15, 2019
    Inventors: William Andrew Brandt, Jilian Kavazov, David Mathew Wessel, Andrew Dunn
  • Publication number: 20190194417
    Abstract: A method of manufacturing a cured polymer resin using functionalized graphene oxide, includes mixing functionalized graphene oxide with a resin precursor and an optional solvent to produce a functionalized graphene solution wherein the particles contain functional groups nearly identical to, or identical to, a polymer precursor material, adding a curing initiator to the resin solution and mixing to produce a resin solution, depositing the formulation into a desired shape, and curing the formulation to form a polymer having functionalized graphene oxide groups in a base polymer material.
    Type: Application
    Filed: December 21, 2017
    Publication date: June 27, 2019
    Inventors: JUNHUA WEI, GABRIEL IFTIME, DAVID MATHEW JOHNSON, JESSICA LOUIS BAKER RIVEST
  • Patent number: 10302021
    Abstract: Herein provided are methods and systems for detecting an uncommanded or uncontrollable high thrust (UHT) event in an aircraft, comprising arming a UHT function, comparing an engine fan speed to a reference target and detecting a first condition when a first threshold is exceeded, comparing a rate of change of a high pressure rotor speed to a reference deceleration schedule and detecting a second condition when a second threshold is exceeded, detecting a UHT event based on excess thrust when the first condition and the second condition are detected, and accommodating the UHT event.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: May 28, 2019
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Michael Krynski, Poi Loon Tang, David Mathews, Antwan Shenouda, Yusuf Syed
  • Patent number: 10278675
    Abstract: Devices, systems, and methods for detecting estrus in subjects are provided. Devices include a housing configured for intravaginal/intrauterine deployment and retention and a sensor disposed in or on the housing, and are configured to use condition information sensed by the sensor to determine an estrus condition of the subject. Methods include deploying a device in the subject, sensing the condition information, and determining an estrus condition using the condition information. Systems include a device configured to communicate with a base station and/or with other implanted devices, which are located within a reception radius thereof, regarding the determined estrus condition.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: May 7, 2019
    Assignee: PALO ALTO RESEARCH CENTER INCORPORATED
    Inventors: David Mathew Johnson, Scott A. Uhland, Ramkumar Abhishek, Robert Thomas Krivacic, Martin Sheridan
  • Publication number: 20190111446
    Abstract: A method of creating aerosols includes drawing a fluid from a fluid source through a first nip, the first nip defined between a first roller and an inner surface of a ring, the first nip having an upstream side and a downstream side, drawing the fluid from the fluid source through a second nip, the second nip defined between a second roller and the inner surface of the ring, the second roller positioned adjacent to and spaced apart from the first roller in a circular configuration, the second nip having an upstream side and a downstream side, stretching the fluid between diverging surfaces of the first roller and the inner surface of the ring on the downstream side of the first nip to form a first fluid filament, stretching the fluid between diverging surface of the second roller and the inner surface of the ring on the downstream side of the second nip to form a second fluid filament, causing the first fluid filament to break into a plurality of first droplets, and causing the second fluid filament to break
    Type: Application
    Filed: December 11, 2018
    Publication date: April 18, 2019
    Inventors: DAVID MATHEW JOHNSON, VICTOR BECK
  • Publication number: 20190110488
    Abstract: A method for producing collagen casings having one or more flavor ingredients incorporated into the collagen is provided. The flavor ingredients may be added during processing of collagen to produce the collagen casing; prior to, during or after drying of the collagen casing; prior to, during or after humidification to add moisture to the collagen casing; prior to, during or after shirring of the collagen casing; prior to or after the casing has been stuffed with meat products; during cooking of the stuffed collagen casing; and/or prior to packaging of the meat product. The flavor ingredient may be a water based flavor ingredient, an oil based flavor ingredient, a powdered flavor ingredient, a microencapsulated flavor ingredient, or a combination of two or more of these types of flavor ingredients. Collagen casings having one or more flavor ingredients incorporated into the collagen casing are also provided.
    Type: Application
    Filed: October 4, 2018
    Publication date: April 18, 2019
    Inventors: Eugene Goldfarb, David Mathews, Stephen Hatch, Masanori Kishimoto
  • Patent number: D851763
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: June 18, 2019
    Assignee: Mathews Outdoor Products LLC
    Inventor: Tyson David Mathews