Patents by Inventor Derrick W. Or

Derrick W. Or 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: 10400352
    Abstract: Techniques for processing materials in supercritical fluids including processing in a capsule disposed within a high-pressure apparatus enclosure are disclosed. The disclosed techniques are useful for growing crystals of GaN, AlN, InN, and their alloys, including InGaN, AlGaN, and AlInGaN for the manufacture of bulk or patterned substrates, which in turn can be used to make optoelectronic devices, lasers, light emitting diodes, solar cells, photoelectrochemical water splitting and hydrogen generation devices, photodetectors, integrated circuits, and transistors.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: September 3, 2019
    Assignee: SORAA, INC.
    Inventors: Mark P. D'Evelyn, James S. Speck, Derrick S. Kamber, Douglas W. Pocius
  • Publication number: 20190226291
    Abstract: A method of mitigating undesired pressure variations in a wellbore due to movement of a well tool string in a well can include selectively decreasing and increasing fluid communication between sections of a wellbore on opposite sides of at least one well tool in the well tool string, the fluid communication being increased in response to detecting a threshold movement of the well tool string relative to the wellbore. A well tool string can include a well tool connected in the well tool string, and having an enlarged outer dimension relative to adjacent sections of the well tool string, a flow passage extending between the well tool's opposite ends, a sensor, and at least one flow control device which selectively permits and prevents fluid communication between the opposite ends via the flow passage, in response to an output of the sensor indicative of movement of the well tool string.
    Type: Application
    Filed: April 3, 2019
    Publication date: July 25, 2019
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Derrick W. Lewis, James R. Lovorn, Jon T. Gosney
  • Publication number: 20190218222
    Abstract: Process for preparing (S)ā€”N-(5-((R)-2-(2,5-difluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a] pyrimidin-3-yl)-3-hydroxypyrrolidine-1-carboxamide (formula I) or a salt thereof by reacting phenyl(5-((R)-2-(2,5-difluorophenyl)pyrrolidin-1-yl)-3,3a-dihydropyrazolo[1,5-a]pyrimidin-3-yl)carbamate or a similar derivative (formula 13) with (S)-pyrrolidin-3-ol (formula 14). Process for preparing phenyl(5-((R)-2-(2,5-difluorophenyl)pyrrolidin-1-yl)-3,3a-dihydropyrazolo[1,5-a]pyrimidin-3-yl)carbamate (formula 13) or a similar derivative by reduction of (R)-5-(2-(2,5-difluorophenyl) pyrrolidin-1-yl)-3-nitropyrazolo[1,5-a]pyrimidine (formula 11) to (R)-5-(2-(2,5-difluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidin-3-amine (formula 12). Process for preparing (R)-2-(2,5-difluorophenyl)pyrrolidine(R)-2-hydroxysuccinate (formula 10) by treating (R)ā€”Nā€”((R)-1-(2,5-difluorophenyl)-3-(1,3-dioxan-2-yl)propyl)-2-methylpropane-2-sulfinamide (formula 19) with an acid and a reducing agent.
    Type: Application
    Filed: May 18, 2017
    Publication date: July 18, 2019
    Inventors: Mark Reynolds, Charles Todd Eary, Stacey Spencer, Derrick Juengst, Bruno Hache, Yutong Jiang, Julia Haas, Steven W. Andrews
  • Publication number: 20190161858
    Abstract: A process of preparing polycrystalline group III nitride chunks comprising the steps of (a) placing a group III metal inside a source chamber; (b) flowing a halogen-containing gas over the group III metal to form a group III metal halide; (c) contacting the group III metal halide with a nitrogen-containing gas in a deposition chamber containing a foil, the foil comprising at least one of Mo, W, Ta, Pd, Pt, Ir, or Re; (d) forming a polycrystalline group III nitride layer on the foil within the deposition chamber; (e) removing the polycrystalline group III nitride layer from the foil; and (f) comminuting the polycrystalline group III nitride layer to form the polycrystalline group III nitride chunks, wherein the removing and the comminuting are performed in any order or simultaneously.
    Type: Application
    Filed: June 29, 2018
    Publication date: May 30, 2019
    Inventors: Douglas W. POCIUS, Derrick S. KAMBER, Mark P. D'EVELYN, Jonathan D. COOK
  • Patent number: 10302619
    Abstract: Grease wear test device includes a body in a form of a collar having an outer surface, a first side and an opposing second side, which are open to form a hollow, open channel through the body, which has a center axis, into which opposing vee blocks can be inserted; and perpendicular to the center axis, a pair of opposing holes through and open to the outer surface of the body and the cylindrical inside wall, through which a cylindrical test journal (falex pin) can be inserted for contact in general with opposing vee-shaped channels of the inserted, opposing vee blocks, and for rotation during testing. The device can be used to modify a falex pin and vee block device, to receive and contain a small sample of grease or another organic paste product for testing such as a modified version of an ASTM D2670 test method for measuring wear properties of fluid lubricants (falex pin and vee block method).
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: May 28, 2019
    Assignee: TANNAS COMPANY
    Inventors: Jonathan C. Evans, Theodore W. Selby, Marta Manning, Derrick D. Hilliker, Michael A. Habitz
  • Patent number: 10294741
    Abstract: A method of mitigating undesired pressure variations in a wellbore due to movement of a well tool string in a well can include selectively decreasing and increasing fluid communication between sections of a wellbore on opposite sides of at least one well tool in the well tool string, the fluid communication being increased in response to detecting a threshold movement of the well tool string relative to the wellbore. A well tool string can include a well tool connected in the well tool string, and having an enlarged outer dimension relative to adjacent sections of the well tool string, a flow passage extending between the well tool's opposite ends, a sensor, and at least one flow control device which selectively permits and prevents fluid communication between the opposite ends via the flow passage, in response to an output of the sensor indicative of movement of the well tool string.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: May 21, 2019
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Derrick W. Lewis, James R. Lovorn, Jon T. Gosney
  • Patent number: 10260307
    Abstract: A tool insert is removable from a fluid passage in a drill tool body by pressurizing fluid in a removal volume defined between the tool insert and the drill tool body, to by exerting a net fluid pressure bias on the tool insert in a removal direction along the fluid passage. The tool insert can be an annulus sealing assembly mounted in a rotating control device (RCD), with the removal volume being defined radially between a body of the RCD and a bearing assembly of the annulus sealing assembly. A common hydraulic liquid may be used for lubricating the bearing assembly and for hydraulically actuated removal of the annulus sealing assembly.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: April 16, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Craig William Godfrey, Owen Ransom Clark, Derrick W. Lewis
  • Patent number: 10161205
    Abstract: A method of mitigating undesired pressure variations can include flowing fluid between wellbore sections, thereby mitigating a pressure differential due to drill string movement, and the fluid flowing between the wellbore sections via a bypass passage extending through a drilling motor. A drill string can include a drilling motor, a bypass passage in the drilling motor, a sensor, and a flow control device configured to selectively increase and decrease fluid communication between opposite ends of the drilling motor via the bypass passage, in response to an output of the sensor indicative of drill string movement. A method of mitigating undesired pressure variations in a wellbore due to drill string movement can include selectively preventing and permitting fluid communication between wellbore sections on opposite sides of a drilling motor, the fluid communication being permitted in response to detecting a threshold drill string movement.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: December 25, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Derrick W. Lewis, James R. Lovorn, Jon T. Gosney
  • Patent number: 9822087
    Abstract: There is provided a manufacturing assembly for the production of an alkylene oxide and a stream of glycol ethers. The manufacturing assembly produces the alkylene oxide and stream of glycol without the use of equipment for separating substantially all of the alkyl alcohol from the alkylene oxide product stream. Thus, the use of additional pieces of equipment can be avoided, or the equipment required to effectuate any required further separation and/or purification may be smaller and/or cheaper to purchase and/or operate.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: November 21, 2017
    Inventors: Tina L. Arrowood, Derrick W. Flick, John F. Ackford
  • Patent number: 9702210
    Abstract: A method and apparatus are disclosed for drilling a wellbore using a concentric dual drill string. Multiple individually selectively isolable crossover ports intervaled may be provided along the length of the drill string thereby facilitating pumping a well control fluid within a wellbore annulus without the need to run-in or trip-out the drill string. Multiple one way check valves may be included at various points within an inner pipe of the dual drill string to minimize settling of particulate matter during long periods of non-circulation. In an offshore arrangement, the drill string may be used without a marine riser. A rotating control device is provided, and a hydraulic power unit is located at the seafloor for controlling and lubricating the rotating control device. A pump may be located at the seafloor for managing wellbore annulus pressure via the rotating control device.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: July 11, 2017
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Ron J. Dirksen, Derrick W. Lewis
  • Publication number: 20170191333
    Abstract: A drilling system, rotating control device, and a method for accessing a wellbore may employ a rotating control device arranged to form a dynamic seal between the housing and an exterior of the string to isolate the wellbore annulus under both a positive and a negative differential pressure across the seal. The rotating control device may including a sleeve rotatively disposed within the housing and rotatively carried near a longitudinal midpoint of the sleeve by a thrust bearing assembly. One or more seal retainers may be coupled to and sealed against the sleeve, each including a resilient element disposed to slide to a first sealing position within the seal retainer under a positive differential pressure across the element and to slide to a second sealing position within the seal retainer under a negative differential pressure across the element.
    Type: Application
    Filed: February 16, 2015
    Publication date: July 6, 2017
    Inventors: Derrick W. Lewis, Chris A. Grace
  • Patent number: 9643898
    Abstract: Effect adiabatic, catalytic alkanol (alcohol) dehydration using two or more sequential dehydration catalyst beds each of which has disposed therein a different catalyst and, preferably, eliminating heating and heating apparatus disposed between each sequential pair of dehydration catalyst beds.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: May 9, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Derrick W. Flick, Mark W. Stewart
  • Patent number: 9605507
    Abstract: A method of maintaining a desired temperature at a location in a well can include adjusting fluid circulation parameters, thereby reducing a difference between an actual temperature at the location and the desired temperature. A well system can include at least one sensor, an output of the sensor being used for determining a temperature at a location in a well, and a hydraulics model which determines a desired change in fluid circulation through the well, in response to the temperature at the location being different from a desired temperature at the location. Another method of maintaining a desired temperature at a location in a well can include adjusting a density, solids content and/or flow rate of a fluid circulated through the well, thereby urging a temperature at the location toward the desired temperature.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: March 28, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: James R. Lovorn, Derrick W. Lewis, Mohamed Sati, Emad Bakri, Clive D. Menezes
  • Publication number: 20160305213
    Abstract: A tool insert is removable from a fluid passage in a drill tool body by pressurizing fluid in a removal volume defined between the tool insert and the drill tool body, to by exerting a net fluid pressure bias on the tool insert in a removal direction along the fluid passage. The tool insert can be an annulus sealing assembly mounted in a rotating control device (RCD), with the removal volume being defined radially between a body of the RCD and a bearing assembly of the annulus sealing assembly. A common hydraulic liquid may be used for lubricating the bearing assembly and for hydraulically actuated removal of the annulus sealing assembly.
    Type: Application
    Filed: December 30, 2013
    Publication date: October 20, 2016
    Inventors: Craig William Godfrey, Owen Ransom Clark, Derrick W. Lewis
  • Publication number: 20160244383
    Abstract: Effect adiabatic, catalytic alkanol (alcohol) dehydration using two or more sequential dehydration catalyst beds each of which has disposed therein a different catalyst and, preferably, eliminating heating and heating apparatus disposed between each sequential pair of dehydration catalyst beds.
    Type: Application
    Filed: November 17, 2014
    Publication date: August 25, 2016
    Inventors: Derrick W. Flick, Mark W. Stewart
  • Patent number: 9375321
    Abstract: Devices such as orthopedic implants are composed of a thermoplastic resin such as polyaryletheretherketone (PEEK), and include a ceramic species, such as a zeolite, to enhance its hydrophilic properties. The ceramic species can be a surface coating, can be incorporated or embedded into the thermoplastic resin, or can be both a surface coating and incorporated or embedded into the resin. In certain embodiments, the ceramic species is zeolite that is incorporated into the device, especially at the exposed surface of the device, and is devoid of antimicrobial metal ions. The device is introduced into the body surgically.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: June 28, 2016
    Assignee: DiFusion Technologies, Inc.
    Inventors: Peter Whang, Joseph Crudden, Derrick W. Johns
  • Publication number: 20160159761
    Abstract: There is provided a manufacturing assembly for the production of an alkylene oxide and a stream of glycol ethers. The manufacturing assembly produces the alkylene oxide and stream of glycol without the use of equipment for separating substantially all of the alkyl alcohol from the alkylene oxide product stream. Thus, the use of additional pieces of equipment can be avoided, or the equipment required to effectuate any required further separation and/or purification may be smaller and/or cheaper to purchase and/or operate.
    Type: Application
    Filed: February 12, 2016
    Publication date: June 9, 2016
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Tina L. Arrowood, Derrick W. Flick, John F. Ackford
  • Patent number: 9279298
    Abstract: A well control method can include removing from a wellbore an undesired influx from a formation into the wellbore, determining a desired pressure profile in real time with a hydraulics model, and automatically operating a flow choking device while removing the undesired influx from the wellbore, thereby influencing an actual pressure profile toward the desired pressure profile. Another well control method can include removing out of a wellbore an undesired influx from a formation into the wellbore, determining a desired wellbore pressure with a hydraulics model, the desired wellbore pressure preventing further influx into the wellbore while removing the undesired influx from the wellbore, and automatically operating a flow choking device while removing the undesired influx from the wellbore, thereby influencing an actual wellbore pressure toward the desired wellbore pressure.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: March 8, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Derrick W. Lewis, Ronald J. Dirksen, David Michael Radley, James R. Lovorn, Fredrick D. Curtis
  • Patent number: 9273019
    Abstract: There is provided a process for manipulating the amount of alkyl alcohol in a product stream, e.g., such as an alkylene oxide product stream. More particularly, and in contrast to conventional processes wherein substantially all of the alkyl alcohol must be separated and desirably recycled, in the present process, a greater amount of alkyl alcohol may be allowed to remain in a partially refined alkylene oxide product stream. The residual alkyl alcohol is subsequently substantially entirely reacted to form a downstream product, e.g., a glycol ether, which is more easily separated from the alkylene oxide product stream. Indeed, the amount of alkyl alcohol in the partially refined alkylene oxide product stream can be selected based upon the output of glycol ethers, if desired.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: March 1, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Tina L. Arrowood, Derrick W. Flick, John F. Ackford
  • Publication number: 20160047187
    Abstract: A method and apparatus are disclosed for drilling a wellbore using a concentric dual drill string. Multiple individually selectively isolable crossover ports intervaled may be provided along the length of the drill string thereby facilitating pumping a well control fluid within a wellbore annulus without the need to run-in or trip-out the drill string. Multiple one way check valves may be included at various points within an inner pipe of the dual drill string to minimize settling of particulate matter during long periods of non-circulation. In an offshore arrangement, the drill string may be used without a marine riser. A rotating control device is provided, and a hydraulic power unit is located at the seafloor for controlling and lubricating the rotating control device. A pump may be located at the seafloor for managing wellbore annulus pressure via the rotating control device.
    Type: Application
    Filed: May 6, 2014
    Publication date: February 18, 2016
    Inventors: Ron J. Dirksen, Derrick W. Lewis