Patents by Inventor David R. Evans

David R. Evans 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: 20240084372
    Abstract: The present disclosure is directed to methods of detecting small fragments of known nucleic acid biomarkers.
    Type: Application
    Filed: August 3, 2023
    Publication date: March 14, 2024
    Applicant: Vanderbilt University
    Inventors: Frederick R. HASELTON, David T. EVANS, Megan E. PASK, Emily C. KIGHT
  • Patent number: 11680381
    Abstract: A hydraulic system for controlling an implement on a work machine may include a hydraulic reservoir, a hydraulic pump in fluid communication with the reservoir, a central valve in fluid communication with the pump and configured for controlling the implement, a load sense pressure relief system, and a controller. The controller may be configured for controlling the central valve and the load sense pressure relief system and selecting between operating the hydraulic system at a first pressure and a second pressure based on a factor relating to implement position.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: June 20, 2023
    Assignee: Caterpillar Underground Mining Pty. Ltd.
    Inventors: Riley A. Albers, David R. Evans, William N. O'Neill, Jason P. Wigg, Jeffrey K. Berry, James T. Ferrier
  • Patent number: 11661723
    Abstract: A hydraulic system for controlling an implement on a work machine may include a hydraulic reservoir, a hydraulic pump in fluid communication with the reservoir, a central valve in fluid communication with the pump and configured for controlling the implement, a pressure relief system arranged in fluid communication with the hydraulic pump and the central valve, and a controller. The controller may be configured for controlling the hydraulic pump, the central valve and the pressure relief system and selecting between operating the hydraulic system at a first pressure and a second pressure based on a factor relating to implement position.
    Type: Grant
    Filed: December 28, 2021
    Date of Patent: May 30, 2023
    Assignee: Caterpillar Underground Mining Pty. Ltd.
    Inventors: Riley A. Albers, David R. Evans, William N. O'Neill, Edward William Mate, Fuaad Ahmed Sayeed, Jason P. Wigg, James T. Ferrier, Jeffrey K. Berry
  • Publication number: 20220213664
    Abstract: A hydraulic system for controlling an implement on a work machine may include a hydraulic reservoir, a hydraulic pump in fluid communication with the reservoir, a central valve in fluid communication with the pump and configured for controlling the implement, a load sense pressure relief system, and a controller. The controller may be configured for controlling the central valve and the load sense pressure relief system and selecting between operating the hydraulic system at a first pressure and a second pressure based on a factor relating to implement position.
    Type: Application
    Filed: January 7, 2021
    Publication date: July 7, 2022
    Applicant: Caterpillar Underground Mining Pty. Ltd.
    Inventors: Riley A. Albers, David R. Evans, William N. O'Neill, Jason P. Wigg, Jeffrey K. Berry, James T. Ferrier
  • Patent number: 10927523
    Abstract: A lift arm for a loader can comprise a pivot end section extending along a first axis and including a first pin hole defining an origin at the intersection of x- and y-axes, a bucket end section extending along a second axis and including a second pin hole located a first distance away from the origin on the y-axis, and a hump section connecting the pivot and bucket end sections comprising a lifting cylinder coupler section including a third pin hole located a second distance away from the y-axis and a torque tube coupling section.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: February 23, 2021
    Assignee: Caterpillar Inc.
    Inventors: Riley A. Albers, Steven D. Springer, Rowan T. Franks, David R. Evans
  • Publication number: 20200263386
    Abstract: A lift arm for a loader can comprise a pivot end section extending along a first axis and including a first pin hole defining an origin at the intersection of x- and y-axes, a bucket end section extending along a second axis and including a second pin hole located a first distance away from the origin on the y-axis, and a hump section connecting the pivot and bucket end sections comprising a lifting cylinder coupler section including a third pin hole located a second distance away from the y-axis and a torque tube coupling section.
    Type: Application
    Filed: February 19, 2019
    Publication date: August 20, 2020
    Applicant: Caterpillar Inc.
    Inventors: Riley A. Albers, Steven D. Springer, Rowan T. Franks, David R. Evans
  • Patent number: 10411286
    Abstract: An alkali/oxidant battery is provided with an associated method of creating battery capacity. The battery is made from an anode including a reduced first alkali metal such as lithium (Li), sodium (Na), and potassium (K), when the battery is charged. The battery's catholyte includes an element, in the battery charged state, such as nickel oxyhydroxide (NiOOH), manganese(IV) (oxide Mn(4+)O2), or iron(III) oxyhydroxide Fe(3+)(OH)3), with the alkali metal hydroxide. An alkali metal ion permeable separator is interposed between the anolyte and the catholyte. For example, if the catholyte includes nickel(II) hydroxide (Ni(OH)2) in a battery discharged state, then it includes NiOOH in a battery charged state. To continue the example, the anolyte may include dissolved lithium ions (Li+) in a discharged state, with solid phase reduced Li formed on the anode in the battery charged state.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: September 10, 2019
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Yuhao Lu, Hidayat Kisdarjono, Jong-Jan Lee, David R. Evans
  • Publication number: 20160268622
    Abstract: An alkali/oxidant battery is provided with an associated method of creating battery capacity. The battery is made from an anode including a reduced first alkali metal such as lithium (Li), sodium (Na), and potassium (K), when the battery is charged. The battery's catholyte includes an element, in the battery charged state, such as nickel oxyhydroxide (NiOOH), manganese(IV) (oxide Mn( 4+)O2), or iron(III) oxyhydroxide Fe(3+)(OH)3), with the alkali metal hydroxide. An alkali metal ion permeable separator is interposed between the anolyte and the catholyte. For example, if the catholyte includes nickel(II) hydroxide (Ni(OH)2) in a battery discharged state, then it includes NiOOH in a battery charged state. To continue the example, the anolyte may include dissolved lithium ions (Li+) in a discharged state, with solid phase reduced Li formed on the anode in the battery charged state.
    Type: Application
    Filed: May 4, 2016
    Publication date: September 15, 2016
    Inventors: Yuhao Lu, Hidayat Kisdarjono, Jong-Jan Lee, David R. Evans
  • Patent number: 9090743
    Abstract: A method is provided for fabricating a metalloporphyrin polymer on a substrate. The method creates a functionalized substrate by attaching an anchor group of a linker, including a terminal alkyne group, to a substrate surface. The functionalized substrate is then exposed to metalloporphyrin monomers, where each metalloporphyrin monomer includes at least two terminal alkyne groups. A plurality of metalloporphyrin monomers (e.g., zinc porphyrin monomers) are thus linked via the metalloporphyrin monomer terminal alkyne groups, forming a metalloporphyrin polymer attached to the substrate. In one aspect, linking the plurality of metalloporphyrin monomers via the metalloporphyrin monomer terminal alkyne groups includes forming butadiyne groups between adjacent metalloporphyrins. Then, forming the metalloporphyrin polymer attached to the substrate includes attaching the metalloporphyrin polymer, via a metalloporphyrin monomer terminal alkyne group, to the terminal alkyne group of an associated linker.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: July 28, 2015
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Sean Andrew Vail, David R. Evans, Jong-Jan Lee
  • Patent number: 9082700
    Abstract: An ultraviolet treatment method is provided for a metal oxide electrode. A metal oxide electrode is exposed to an ultraviolet (UV) light source in a humid environment. The metal oxide electrode is then treated with a moiety having at least one anchor group, where the anchor group is a chemical group capable of promoting communication between the moiety and the metal oxide electrode. As a result, the moiety is bound to the metal oxide electrode. In one aspect the metal oxide electrode is treated with a photoactive moiety. Exposing the metal oxide electrode to the UV light source in the humid environment induces surface defects in the metal oxide electrode in the form of oxygen vacancies. In response to the humidity, atmospheric water competes favorably with oxygen for dissociative adsorption on the metal oxide electrode surface, and hydroxylation of the metal oxide electrode surface is induced.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: July 14, 2015
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Sean Andrew Vail, David R. Evans, Wei Pan, Jong-Jan Lee
  • Publication number: 20150005464
    Abstract: A method is provided for fabricating a metalloporphyrin polymer on a substrate. The method creates a functionalized substrate by attaching an anchor group of a linker, including a terminal alkyne group, to a substrate surface. The functionalized substrate is then exposed to metalloporphyrin monomers, where each metalloporphyrin monomer includes at least two terminal alkyne groups. A plurality of metalloporphyrin monomers (e.g., zinc porphyrin monomers) are thus linked via the metalloporphyrin monomer terminal alkyne groups, forming a metalloporphyrin polymer attached to the substrate. In one aspect, linking the plurality of metalloporphyrin monomers via the metalloporphyrin monomer terminal alkyne groups includes forming butadiyne groups between adjacent metalloporphyrins. Then, forming the metalloporphyrin polymer attached to the substrate includes attaching the metalloporphyrin polymer, via a metalloporphyrin monomer terminal alkyne group, to the terminal alkyne group of an associated linker.
    Type: Application
    Filed: July 26, 2013
    Publication date: January 1, 2015
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Sean Andrew Vail, David R. Evans, Jong-Jan Lee
  • Patent number: 8907081
    Abstract: A long wavelength absorbing porphyrin/metalloporphyrin molecule is provided, made up of a porphyrin macrocycle and an anchor group for attachment to a substrate. A molecular linking element is interposed between the porphyrin macrocycle and the anchor group. The porphyrin/metalloporphyrin molecule also includes an (aminophenyl)amine group, either N,N-(4-aminophenyl)amine or N-phenyl-N-(4-aminophenyl)amine, where an amino moiety of the 4-aminophenyl group is derivatized by an element such as hydrogen, haloalkanes, aromatic hydrocarbons, halogenated aromatic hydrocarbons, heteroarenes, halogenated heteroarenes, or combinations of the above-mentioned elements.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: December 9, 2014
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Sean Andrew Vail, David R. Evans, Wei Pan
  • Patent number: 8810897
    Abstract: A method is provided for improving metallic nanostructure stability. The method provides a substrate, and using a physical vapor deposition (PVD) process for example, deposits metallic nanostructures having a first diameter overlying the substrate. Some examples of metallic nanostructures include Ag, Au, and Al. The metallic nanostructures are annealed in an atmosphere including an inert gas and H2. The annealing temperature is less than the melting temperature the metal material in bulk form. In response to the annealing, stabilized metallic nanostructures are formed. If the stabilized metallic nanostructures are exposed to an ambient air environment the stabilized metallic nanostructure maintain the first diameter. Typically, the metallic nanostructures are initially formed having a rectangular shape with corners. After annealing, the stabilized metallic nanostructures have a dome shape.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: August 19, 2014
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Akinori Hashimura, Liang Tang, David R. Evans
  • Patent number: 8792339
    Abstract: A cable modem termination system (CMTS) is adapted to move particular traffic flows to a different priority service flow. The CMTS includes detection logic, or is coupled to detection logic, to detect the presence of particular traffic, logic to establish a different priority service flow between a cable modem termination system and a cable modem, and flow control logic to direct a given packet on to the different priority service flow if the given packet contains information that matches one or more classifiers.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: July 29, 2014
    Assignee: ARRIS Enterprises, Inc.
    Inventor: David R Evans
  • Publication number: 20140075745
    Abstract: An alkali/oxidant battery is provided with an associated method of creating battery capacity. The battery is made from an anode including a reduced first alkali metal such as lithium (Li), sodium (Na), and potassium (K), when the battery is charged. The battery's catholyte includes an element, in the battery charged state, such as nickel oxyhydroxide (NiOOH), magnesium(IV) (oxide Mn(4+)O2), or iron(III) oxyhydroxide (Fe(3+)(OH)3), with the alkali metal hydroxide. An alkali metal ion permeable separator is interposed between the anolyte and the catholyte. For example, if the catholyte includes nickel(II) hydroxide (Ni(OH)2) in a battery discharged state, then it includes NiOOH in a battery charged state. To continue the example, the anolyte may include dissolved lithium ions (Li+) in a discharged state, with solid phase reduced Li formed on the anode in the battery charged state.
    Type: Application
    Filed: November 27, 2013
    Publication date: March 20, 2014
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Yuhao Lu, Hidayat Kisdarjono, Jong-Jan Lee, David R. Evans
  • Publication number: 20130122723
    Abstract: An ultraviolet treatment method is provided for a metal oxide electrode. A metal oxide electrode is exposed to an ultraviolet (UV) light source in a humid environment. The metal oxide electrode is then treated with a moiety having at least one anchor group, where the anchor group is a chemical group capable of promoting communication between the moiety and the metal oxide electrode. As a result, the moiety is bound to the metal oxide electrode. In one aspect the metal oxide electrode is treated with a photoactive moiety. Exposing the metal oxide electrode to the UV light source in the humid environment induces surface defects in the metal oxide electrode in the form of oxygen vacancies. In response to the humidity, atmospheric water competes favorably with oxygen for dissociative adsorption on the metal oxide electrode surface, and hydroxylation of the metal oxide electrode surface is induced.
    Type: Application
    Filed: November 14, 2011
    Publication date: May 16, 2013
    Inventors: Sean Andrew VAIL, David R. EVANS, Wei PAN, Jong-Jan LEE
  • Publication number: 20130077036
    Abstract: A method is provided for improving metallic nanostructure stability. The method provides a substrate, and using a physical vapor deposition (PVD) process for example, deposits metallic nanostructures having a first diameter overlying the substrate. Some examples of metallic nanostructures include Ag, Au, and Al. The metallic nanostructures are annealed in an atmosphere including an inert gas and H2. The annealing temperature is less than the melting temperature the metal material in bulk form. In response to the annealing, stabilized metallic nanostructures are formed. If the stabilized metallic nanostructures are exposed to an ambient air environment the stabilized metallic nanostructure maintain the first diameter. Typically, the metallic nanostructures are initially formed having a rectangular shape with corners. After annealing, the stabilized metallic nanostructures have a dome shape.
    Type: Application
    Filed: March 29, 2012
    Publication date: March 28, 2013
    Inventors: Akinori Hashimura, Liang Tang, David R. Evans
  • Publication number: 20120302743
    Abstract: A long wavelength absorbing porphyrin/metalloporphyrin molecule is provided, made up of a porphyrin macrocycle and an anchor group for attachment to a substrate. A molecular linking element is interposed between the porphyrin macrocycle and the anchor group. The porphyrin/metalloporphyrin molecule also includes an (aminophenyl)amine group, either N,N-(4-aminophenyl)amine or N-phenyl-N-(4-aminophenyl)amine, where an amino moiety of the 4-aminophenyl group is derivatized by an element such as hydrogen, haloalkanes, aromatic hydrocarbons, halogenated aromatic hydrocarbons, heteroarenes, halogenated heteroarenes, or combinations of the above-mentioned elements.
    Type: Application
    Filed: May 27, 2011
    Publication date: November 29, 2012
    Inventors: Sean Andrew Vail, David R. Evans, Wei Pan
  • Patent number: 8264081
    Abstract: A multi-layered barrier metal thin film is deposited on a substrate by atomic layer chemical vapor deposition (ALCVD). The multi-layer film may comprise several different layers of a single chemical species, or several layers each of distinct or alternating chemical species. In a preferred embodiment, the multi-layer barrier thin film comprises a Tantalum Nitride layer on a substrate, with a Titanium Nitride layer deposited thereon. The thickness of the entire multi-layer film may be approximately fifty Angstroms. The film has superior film characteristics, such as anti-diffusion capability, low resistivity, high density, and step coverage, when compared to films deposited by conventional chemical vapor deposition (CVD). The multi-layered barrier metal thin film of the present invention has improved adhesion characteristics and is particularly suited for metallization of a Copper film thereon.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: September 11, 2012
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Wei Pan, Yoshi Ono, David R. Evans, Sheng Teng Hsu
  • Patent number: RE47382
    Abstract: A method is provided for forming a metal/semiconductor/metal (MSM) back-to-back Schottky diode from a silicon (Si) semiconductor. The method deposits a Si semiconductor layer between a bottom electrode and a top electrode, and forms a MSM diode having a threshold voltage, breakdown voltage, and on/off current ratio. The method is able to modify the threshold voltage, breakdown voltage, and on/off current ratio of the MSM diode in response to controlling the Si semiconductor layer thickness. Generally, both the threshold and breakdown voltage are increased in response to increasing the Si thickness. With respect to the on/off current ratio, there is an optimal thickness. The method is able to form an amorphous Si (a-Si) and polycrystalline Si (polySi) semiconductor layer using either chemical vapor deposition (CVD) or DC sputtering. The Si semiconductor can be doped with a Group V donor material, which decreases the threshold voltage and increases the breakdown voltage.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: May 7, 2019
    Assignee: Xenogenic Development Limited Liability Company
    Inventors: Tingkai Li, Sheng Teng Hsu, David R. Evans