Patents by Inventor Ronald D. Lewis

Ronald D. Lewis 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: 20210055839
    Abstract: Systems and methods to determine an event location on a feeder line segment that is downstream of a feeder line branch. A first indication of an event is received from a sensor located on a feeder line upstream of the feeder line branch. A status of a monitored segment downstream of the feeder line branch is determined based on receiving the indication. The monitored segment is determined to be a particular branch based on locations of the feeder line branch, status sensors downstream of the feeder line branch, and location data of segments downstream of the feeder line branch. The event is determined to have occurred on a determined segment downstream of the feeder line branch based on the status of the monitored segment and on which segment is the monitored segment. An indication that the event occurred on the determined segment is provided based on determining the monitored segment.
    Type: Application
    Filed: October 20, 2020
    Publication date: February 25, 2021
    Inventors: Ronald A. CAPUTE, Troy D. LEWIS, Vignesh RANGARAJ
  • Patent number: 10900318
    Abstract: A method that includes introducing a first fluid at a first flow rate into a first end of a channel of a hydraulic energy transfer system, introducing a second fluid at a second flow rate into a second end of the channel opposite the first end, wherein the first flow rate is lower than the second flow rate, and operating the hydraulic energy transfer system to output a third fluid comprising the first fluid and a portion of the second fluid and exhibiting a step-change in concentration of the first fluid. The first fluid is proppant slurry introduced at a first pressure, the second fluid is a clean fluid introduced at a second pressure higher than the first pressure, and third fluid is a fracturing fluid exhibiting the step-change in proppant concentration. The hydraulic energy transfer system includes a rotary isobaric pressure exchanger.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: January 26, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Bryan John Lewis, Stanley V. Stephenson, Philip D. Nguyen, Ronald Glen Dusterhoft
  • Publication number: 20180371009
    Abstract: The present disclosure relates to methods and novel intermediates useful in the preparation of a compound of formula I or pharmaceutically acceptable salt, hydrate, solvate or amino acid, sulfate or glucuronide conjugate, or prodrug thereof.
    Type: Application
    Filed: June 22, 2018
    Publication date: December 27, 2018
    Inventors: Roberto Pellicciari, Antimo Gioiello, Gabriel Galvin, Ronald D Lewis, Mathew Yanik, Myoung Goo Kim, Fred Leusink, Bartjan Koning, Thomas Hensel
  • Patent number: 8483336
    Abstract: A method for the extraction of communication interference, may include converting a digital baseband signal into an analog signal, transmitting the analog signal; receiving the analog signal, converting the analog signal after receipt into a received digital signal, modulating the digital baseband signal to generate a reference signal, estimating a delay between the received digital signal and the reference signal, generating an aligned reference signal based on the reference signal and the delay, estimating a transmission gain of the received digital signal based on the received digital signal and the aligned reference signal, multiplying the aligned reference signal by the transmission gain to generate a scaled reference signal, and subtracting the scaled reference signal from the received digital signal to generate an estimated interference present in the received digital signal.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: July 9, 2013
    Assignee: Raytheon Company
    Inventors: Melissa L. Fedde, Ronald D. Lewis, David W. Holsteen, Eric R. Grover
  • Publication number: 20120155564
    Abstract: A method for the extraction of communication interference, may include converting a digital baseband signal into an analog signal, transmitting the analog signal; receiving the analog signal, converting the analog signal after receipt into a received digital signal, modulating the digital baseband signal to generate a reference signal, estimating a delay between the received digital signal and the reference signal, generating an aligned reference signal based on the reference signal and the delay, estimating a transmission gain of the received digital signal based on the received digital signal and the aligned reference signal, multiplying the aligned reference signal by the transmission gain to generate a scaled reference signal, and subtracting the scaled reference signal from the received digital signal to generate an estimated interference present in the received digital signal.
    Type: Application
    Filed: December 21, 2010
    Publication date: June 21, 2012
    Applicant: RAYTHEON COMPANY
    Inventors: Melissa L. Fedde, Ronald D. Lewis, David W. Holsteen, Eric R. Grover
  • Patent number: 6677473
    Abstract: Compounds and pharmaceutical compositions useful as plasminogen activator inhibitor (PAI) antagonists are provided. In particular, methods of antagonizing PAI with substituted and unsubstituted aryl and heteroaryl ethers and thioethers, benzils, benzyl ethers, benzoate esters, sulfones and benzophenones are provided.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: January 13, 2004
    Assignee: Corvas International INC
    Inventors: Edwin L. Madison, Terence K. Brunck, Joseph Edward Semple, Marguerita Lim-Wilby, Kent E. Pryor, Ronald D. Lewis, II, David F. Duncan, C. Maxwell Lawrence
  • Publication number: 20030180804
    Abstract: The present invention provides compounds and compound libraries that are useful as protease modulators. The compounds and compound libraries are preferably made using the methods of the present invention which utilize peptide synthesis and combinatorial chemistry methods on a solid phase.
    Type: Application
    Filed: October 29, 2002
    Publication date: September 25, 2003
    Applicant: Corvas International, Inc
    Inventors: Kent E. Pryor, Ronald D. Lewis, Jason W. Brown