Patents by Inventor Nathan POWELL

Nathan POWELL 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).

  • Dynamic roaming
    Patent number: 11956855
    Abstract: A system enables a home operator to establish an automated monitoring process which identifies outage events on competitor wireless networks (e.g., peer operators) operating in the same geographies as home operator. The home operator then is able to selectively offer, in near real-time, to open roaming to the peer operator, or implement roaming automatically based on predefined and mutually agreed upon rule sets. The monitoring process may observe non-customer attach request volumes in order to identify outage events on competitor wireless networks.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: April 9, 2024
    Assignees: AT&T Intellectual Property I, L.P., AT&T Mobility II LLC
    Inventors: Robert S. Klein, Mohammed Yousuffi, Nathan Stowell, Senthil Raj Dhandapani, Daniel Powell, Iftekhar Alam, Slawomir Stawiarski, William Turczyn, Ngwane Maina
  • Reduced energy alcohol separation process
    Patent number: 8884080
    Abstract: Recovery of alcohols, in particular ethanol, from a crude ethanol product obtained from the hydrogenation of acetic acid using a reduced energy process. The crude ethanol product may be fed to a distillation column in which a substantial portion of the water is removed with the acetic acid in the residue. The ethanol product is obtained from the distillate.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: November 11, 2014
    Assignee: Celanese International Corporation
    Inventors: David Lee, Adam Orosco, Nathan Powell, Manuel Salado, Lincoln Sarager, R. Jay Warner, Trinity Horton, Radmila Jevtic, Victor J. Johnston
  • Process for removing water from alcohol mixtures
    Patent number: 8754268
    Abstract: A process for removing water from an alcohol mixture, such as an ethanol mixture in the production of ethanol by hydrogenating acetic acid. The water is removed from a distillate of a first column using an adsorption unit, membrane, extractive column distillation, or a combination thereof.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: June 17, 2014
    Assignee: Celanese International Corporation
    Inventors: David Lee, Adam Orosco, Nathan Powell, Manuel Salado, Lincoln Sarager, R. Jay Warner, Trinity Horton, Radmila Jevtic, Victor J. Johnston
  • Process to recover alcohol from an acidic residue stream
    Patent number: 8686200
    Abstract: Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid using a low energy process. The crude ethanol product is separated in a column to produce a distillate stream comprising ethyl acetate and a residue stream comprising ethanol, acetic acid, and water. The ethanol product is recovered from the residue stream.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: April 1, 2014
    Assignee: Celanese International Corporation
    Inventors: David Lee, Fred Ronald Olsson, Adam Orosco, Nathan Powell, Manuel Salado, Lincoln Sarager, R. Jay Warner, Trinity Horton, Radmila Jevtic, Victor J. Johnston
  • Process to Recover Alcohol From an Acidic Residue Stream
    Publication number: 20120277485
    Abstract: Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid using a low energy process. The crude ethanol product is separated in a column to produce a distillate stream comprising ethyl acetate and a residue stream comprising ethanol, acetic acid, and water. The ethanol product is recovered from the residue stream.
    Type: Application
    Filed: April 26, 2011
    Publication date: November 1, 2012
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: David LEE, Fred Ronald OLSSON, Adam OROSCO, Nathan POWELL, Manuel SALADO, Lincoln SARAGER, R. Jay WARNER, Trinity HORTON, Radmila JEVTIC, Victor J. JOHNSTON
  • Process for Removing Water From Alcohol Mixtures
    Publication number: 20120273338
    Abstract: A process for removing water from an alcohol mixture, such as an ethanol mixture in the production of ethanol by hydrogenating acetic acid. The water is removed from a distillate of a first column using an adsorption unit, membrane, extractive column distillation, or a combination thereof.
    Type: Application
    Filed: April 26, 2011
    Publication date: November 1, 2012
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: David LEE, Adam OROSCO, Nathan POWELL, Manuel SALADO, Lincoln SARAGER, R. Jay WARNER, Trinity HORTON, Radmila JEVTIC, Victor J. JOHNSTON
  • VENT SCRUBBERS FOR USE IN PRODUCTION OF ETHANOL
    Publication number: 20120253084
    Abstract: A process for producing ethanol comprising the steps of hydrogenating an acetic acid feed stream to form a crude ethanol product and separating at least a portion of the crude ethanol product to form an ethanol stream and at least one vent stream. The vent stream comprises non-condensable gases at least one volatile organic. The process further comprises the step of scrubbing the vent stream with at least two different solvents to recover the volatile organics. The vent stream may also comprise entrained ethanol, which may also be recovered.
    Type: Application
    Filed: April 1, 2011
    Publication date: October 4, 2012
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: Gerald Grusendorf, Victor J. Johnston, Fred Ronald Olsson, Wayne D. Picard, Nathan Powell, Samuel Roundy, Ismael Tejeda, James Curtis
  • Reduced Energy Alcohol Separation Process
    Publication number: 20120010438
    Abstract: Recovery of alcohols, in particular ethanol, from a crude ethanol product obtained from the hydrogenation of acetic acid using a reduced energy process. The crude ethanol product may be fed to a distillation column in which a substantial portion of the water is removed with the acetic acid in the residue. The ethanol product is obtained from the distillate.
    Type: Application
    Filed: April 26, 2011
    Publication date: January 12, 2012
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: David LEE, Adam OROSCO, Nathan POWELL, Manuel SALADO, Lincoln SARAGER, R. Jay WARNER, Trinity HORTON, Radmila JEVTIC, Victor JOHNSTON