Patents by Inventor David Stiles
David Stiles 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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Patent number: 11891948Abstract: A moving wall positive displacement turbine system, or moving wall engine, utilizes the relative rotation of a ring, a central body, and a housing with respect to each other to generate power, where the ring is concentrically positioned in a channel between the central body and the housing. The housing and central body remain stationary while the ring rotates within the channel. The channel has low friction walls on either side to reduce friction between rotating components. The ring has a series of vanes passing through it and pivotally attached on each side to the low friction walls in the housing to compress an air-fuel mixture prior to combustion. The system is able to compress and combust an air-fuel mixture to generate direct rotational energy.Type: GrantFiled: January 30, 2023Date of Patent: February 6, 2024Inventor: David Stiles
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Patent number: 11817173Abstract: Systems and methods are provided herein that implement and utilize temporal state machines and other temporal computational/memory circuits. For example, a temporal state machine is provided that comprises a temporal computational unit comprising at least one circuit to perform a time-domain operation, and a temporal memory unit. Both the temporal computational unit and temporal memory unit can operate using solely, or partially, time-encoded wavefronts. The computation unit accesses time-encoded wavefronts from the memory and can output and write time-encoded wavefronts back to the memory.Type: GrantFiled: October 1, 2021Date of Patent: November 14, 2023Assignees: UNIVERSITY OF MARYLAND, COLLEGE PARK, GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCEInventors: Advait Madhavan, Matthew William Daniels, Mark David Stiles
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Patent number: 11688599Abstract: An environmental sensor may acquire data related to flux and energy of charged particles in an environment for using the data to determine, in substantially real time, whether the environment is conducive to an anomaly caused by the charged particles. The sensor may include an electrostatic analyzer structurally configured for charged particle detection, the electrostatic analyzer generating controllable electric fields to provide energy filtering of incoming charged particles, where, after filtering, the charged particles impact a charge multiplier to establish a detectable signal. The sensor may further include a plurality of silicon detector telescopes structurally configured to collectively detect electrons having energy within the range of about 100 electronvolts (eV) to about 5 mega-electronvolts (MeV) and to collectively detect protons having energy within the range of about 2 MeV to about 100 MeV.Type: GrantFiled: December 18, 2018Date of Patent: June 27, 2023Assignee: Government of the United States of America as represented by the Secretary of the Air ForceInventors: Chadwick Lindstrom, John Ballenthin, David Barton, Joseph Coombs, Scott Kratochvil, David Stiles, Adrian Wheelock, Stephen Quigley, Patrick Roddy, Richard Selesnick
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Patent number: 11651231Abstract: A quasi-systolic array includes: a primary quasi-systolic processor; an edge row bank and edge column bank of edge quasi-systolic processors; and an interior bank of interior quasi-systolic processors. The primary quasi-systolic processor, edge quasi-systolic processor, and interior quasi-systolic processor independently include a quasi-systolic processor and are disposed and electrically connected in rows and columns in the quasi-systolic array.Type: GrantFiled: March 2, 2020Date of Patent: May 16, 2023Assignee: GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCEInventors: Brian Douglas Hoskins, Mark David Stiles, Matthew William Daniels, Advait Madhavan, Gina Cristina Adam
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Patent number: 11529337Abstract: Provided is a method of treating or lessening the severity of pain in a subject, comprising administering to the subject a compound of formula (I), defined as described herein, or a pharmaceutically acceptable salt thereof.Type: GrantFiled: February 12, 2019Date of Patent: December 20, 2022Assignee: Vertex Pharmaceuticals IncorporatedInventors: Sagar Agarwal, Cynthia Barber, Francoise Berlioz-Seux, Brenda Cirincione, James Jones, Sandra Lechner, Marco Rizzo, David Stiles
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Patent number: 11434406Abstract: A method of designing compressible particles for a fluid mixture. The compressible particles are intended to be used for attenuating pressure within a confined volume such as a trapped annulus. Preferably, the compressible particles reside buoyantly within an aqueous fluid, forming a fluid mixture. Each of the compressible particles is fabricated to collapse in response to fluid pressure within the confined volume, and comprises carbon. The particles may each have a porosity of between 5% and 40%, and a compressibility of between 10% and 30%, at 10,000 psi. The particles are tuned to have a buoyancy that is lower than the carrier fluid while still having resiliency.Type: GrantFiled: November 12, 2019Date of Patent: September 6, 2022Assignee: ExxonMobil Upstream Research CompanyInventors: Ward E. Narhi, Sandeep A. Kibey, David A. Stiles, Michael R. Awe, Adam W. Aylor
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Publication number: 20220108736Abstract: Systems and methods are provided herein that implement and utilize temporal state machines and other temporal computational/memory circuits. For example, a temporal state machine is provided that comprises a temporal computational unit comprising at least one circuit to perform a time-domain operation, and a temporal memory unit. Both the temporal computational unit and temporal memory unit can operate using solely, or partially, time-encoded wavefronts. The computation unit accesses time-encoded wavefronts from the memory and can output and write time-encoded wavefronts back to the memory.Type: ApplicationFiled: October 1, 2021Publication date: April 7, 2022Inventors: Advait MADHAVAN, Matthew William DANIELS, Mark David STILES
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Publication number: 20210052610Abstract: Provided is a method of treating or lessening the severity of pain in a subject, comprising administering to the subject a compound of formula (I), defined as described herein, or a pharmaceutically acceptable salt thereof.Type: ApplicationFiled: February 12, 2019Publication date: February 25, 2021Inventors: Sagar AGARWAL, Cynthia BARBER, Francoise BERLIOZ-SEUX, Brenda CIRINCIONE, James JONES, Sandra LECHNER, Marco RIZZO, David STILES
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Publication number: 20200279169Abstract: A quasi-systolic array includes: a primary quasi-systolic processor; an edge row bank and edge column bank of edge quasi-systolic processors; and an interior bank of interior quasi-systolic processors. The primary quasi-systolic processor, edge quasi-systolic processor, and interior quasi-systolic processor independently include a quasi-systolic processor and are disposed and electrically connected in rows and columns in the quasi-systolic array.Type: ApplicationFiled: March 2, 2020Publication date: September 3, 2020Inventors: Brian Douglas Hoskins, Mark David Stiles, Matthew William Daniels, Advait Madhavan, Gina Cristina Adam
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Publication number: 20200148932Abstract: A method of designing compressible particles for a fluid mixture. The compressible particles are intended to be used for attenuating pressure within a confined volume such as a trapped annulus. Preferably, the compressible particles reside buoyantly within an aqueous fluid, forming a fluid mixture. Each of the compressible particles is fabricated to collapse in response to fluid pressure within the confined volume, and comprises carbon. The particles may each have a porosity of between 5% and 40%, and a compressibility of between 10% and 30%, at 10,000 psi. The particles are tuned to have a buoyancy that is lower than the carrier fluid while still having resiliency.Type: ApplicationFiled: November 12, 2019Publication date: May 14, 2020Inventors: Ward E. Narhi, Sandeep A. Kibey, David A. Stiles, Michael R. Awe, Adam W. Aylor
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Patent number: 10480308Abstract: An electro-acoustic system for downhole telemetry employs a series of communications nodes spaced along a string of casing within a wellbore. The nodes allow wireless communication between transceivers residing within the nodes and a receiver at the surface. The transceivers provide node-to-node communication up a wellbore at high data transmission rates for data indicative of fluid flow within the wellbore. A method of monitoring the flow of fluid within a wellbore uses a plurality of data transmission nodes situated along the casing string sending signals to a receiver at the surface. The signals are then analyzed.Type: GrantFiled: December 18, 2013Date of Patent: November 19, 2019Assignee: ExxonMobil Upstream Research CompanyInventors: Timothy I. Morrow, Stuart R. Keller, Max Deffenbaugh, Mark M. Disko, David A. Stiles
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Publication number: 20190343817Abstract: Provided is a method of treating or lessening the severity of pain in a subject, comprising administering to the subject a compound of formula (I), defined as described herein, or a pharmaceutically acceptable salt thereof.Type: ApplicationFiled: February 12, 2019Publication date: November 14, 2019Inventors: Sagar Agarwal, Cynthia Barber, Francoise Berlioz-Seux, Brenda Cirincione, James Jones, Sandra Lechner, Marco Rizzo, David Stiles
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Patent number: 10100635Abstract: A system for downhole telemetry is provided herein. The system employs a series of communications nodes spaced along a tubular body in a wellbore. Each communications node is associated with a sensor that senses data indicative of a formation condition or a wellbore parameter along a subsurface formation. The data is stored in memory until a logging tool is run into the wellbore. The data is transmitted from the respective communications nodes to a receiver in the logging tool. The data is then transferred to the surface. A method of transmitting data in a wellbore is also provided herein. The method uses a logging tool to harvest data in a wellbore from a plurality of sensor communications nodes.Type: GrantFiled: December 18, 2013Date of Patent: October 16, 2018Assignee: ExxonMobil Upstream Research CompanyInventors: Stuart R. Keller, Timothy I. Morrow, James S. Burns, Max Deffenbaugh, Mark M. Disko, David A. Stiles
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Patent number: 9759062Abstract: A system for downhole telemetry is provided herein. The system employs a series of communications nodes spaced along a tubular body either above or below ground, such as in a wellbore. The nodes allow for wireless communication between one or more sensors residing at the level of a subsurface formation or along a pipeline, and a receiver at the surface. The communications nodes employ electro-acoustic transducers that provide for node-to-node communication along the tubular body at high data transmission rates. A method of transmitting data in a wellbore is also provided herein. The method uses a plurality of data transmission nodes situated along a tubular body to accomplish a wireless transmission of data along the wellbore using acoustic energy.Type: GrantFiled: December 18, 2013Date of Patent: September 12, 2017Assignee: ExxonMobil Upstream Research CompanyInventors: Max Deffenbaugh, Stuart R. Keller, David A. Stiles, Timothy I. Morrow, Mark M. Disko, Henry Alan Wolf, Katie M. Walker, Scott W. Clawson
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Patent number: 9644337Abstract: A system for positioning and anchoring columns. The system includes a positioning template having a first frame configured to support horizontal panels, jacking mechanisms for leveling the horizontal panels, a first opening defined by the horizontally aligned panels configured to guide a sleeve when driven downward below grade level through the first opening, and a tubular sleeve for passing through the first opening and for receiving a second frame. The second frame includes frame members defining a second opening on each end of the second frame and a plurality of elongated bars spanning between the first end and the second end. The second frame is for guiding a pile when driven downward. A pile having a first end and an opposing second end is configured for receiving a connecting tube of a column. A column having a connecting tube is to inserted into the pile's first end.Type: GrantFiled: August 25, 2016Date of Patent: May 9, 2017Assignee: Precast Wall Systems, Inc.Inventors: Richard Stiles, David Stiles
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Patent number: 9631485Abstract: A system for downhole telemetry employs a series of communications nodes spaced along a tubular body such as a pipe in a wellbore. The nodes allow hybrid wired-and-wireless communication between one or more sensors residing at the level of a subsurface formation and a receiver at the surface. The nodes employ electro-acoustic transducers providing node-to-node communication up a wellbore at high data transmission rates. A method of transmitting data in a wellbore uses a plurality of data transmission nodes situated along a tubular body to deliver an alternating electrical and acoustic transmission of data along the wellbore.Type: GrantFiled: December 18, 2013Date of Patent: April 25, 2017Assignee: ExxonMobil Upstream Research CompanyInventors: Stuart R. Keller, Timothy I. Morrow, Max Deffenbaugh, Mark M. Disko, David A. Stiles
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Patent number: 9557434Abstract: An electro-acoustic system for downhole telemetry employs a series of communications nodes spaced along a string of casing within a wellbore. The nodes allow wireless communication between transceivers residing within the communications nodes and a receiver at the surface. The transceivers provide node-to-node communication of data indicating elastic waves generated as a result of the formation of subsurface fractures. The data is processed which generates a map of fracture geometry. A method of evaluating fracture geometry in a subsurface formation uses a plurality of data transmission nodes situated along the casing string which send signals to a receiver at the surface. The signals are analyzed which generates a subsurface map.Type: GrantFiled: December 18, 2013Date of Patent: January 31, 2017Assignee: ExxonMobil Upstream Research CompanyInventors: Stuart R. Keller, Timothy I. Morrow, Max Deffenbaugh, Mark M. Disko, David A. Stiles
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Patent number: 9393361Abstract: A combination material can be infused into a subject and a determination can be made of a VOD and/or a convection gradient of a liquid material portion in the VOD. The combination material can be infused in the subject using selected parameters. A correlation of data relating to the liquid material can be made to a selected material to determine parameters for infusion the selected material.Type: GrantFiled: December 14, 2012Date of Patent: July 19, 2016Assignee: Medtronic, Inc.Inventor: David Stiles
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Publication number: 20160108698Abstract: A method for providing zonal communication interruption in a wellbore, comprising: positioning a plurality of cement diverters axially along an outer surface of a tubular member, each cement diverter having an axial length and an azimuthal extension of less than 360°, wherein the azimuthal position of at least one cement diverter is axially rotated from an adjacent cement diverter; positioning the tubular member within the wellbore; and flowing cement into an annulus formed between an inner surface of the wellbore and the outer surface of the tubular member, wherein the positioning of the plurality of cement diverters provides zonal communication interruption about every 10 to 20 feet (about every 3.0 to about 6.1 meters) axially along the tubular member. An apparatus for providing zonal communication interruption in a wellbore is also provided.Type: ApplicationFiled: October 21, 2014Publication date: April 21, 2016Inventors: Jose Oliverio Alvarez, David A. Stiles
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Publication number: 20150354351Abstract: An electro-acoustic system for downhole telemetry employs a series of communications nodes spaced along a string of casing within a wellbore. The nodes allow wireless communication between transceivers residing within the nodes and a receiver at the surface. The transceivers provide node-to-node communication up a wellbore at high data transmission rates for data indicative of fluid flow within the wellbore. A method of monitoring the flow of fluid within a wellbore uses a plurality of data transmission nodes situated along the casing string sending signals to a receiver at the surface. The signals are then analyzed.Type: ApplicationFiled: December 18, 2013Publication date: December 10, 2015Inventors: Timothy I. MORROW, Stuart R. KELLER, Max DEFFENBAUGH, Mark M. DISKO, David A. STILES