Patents by Inventor Christopher Barr

Christopher Barr 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: 20240021847
    Abstract: Example embodiments provide fuel cell humidifiers. An example humidifier comprises a stack of unit cells. Each of the unit cells may comprise a separator having a perimeter frame and first and second major faces, a first membrane sheet bonded to the perimeter frame on the first major face of the separator and a second membrane sheet bonded to the perimeter frame on the second major face of the separator. The perimeter frame and the first and second membrane sheets may define a cavity in an interior of the perimeter frame. Opposed frame ends of the perimeter frame may be apertured to allow a first flow to flow through the cavity in a first direction. The separator may include first and second ridges that extend across first and second frame ends.
    Type: Application
    Filed: October 8, 2021
    Publication date: January 18, 2024
    Inventors: Kathleen Marie MEGALE, Ryan HUIZING, Jonathan LO, Christopher BARR, Reza AMINZADEH
  • Patent number: 9962623
    Abstract: The present invention relates to processes to remove butanol and other product alcohols from a fermentation broth employing vacuum vaporization.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: May 8, 2018
    Assignee: Butamax Advanced Biofuels LLC
    Inventors: Joseph J. Zaher, Steven Christopher Barr, Robert W. Sylvester, Aidan Hurley
  • Publication number: 20170298393
    Abstract: The present invention relates to processes for recovering butanol produced in a fermentative process using, for example, an ethanol production plant which has been reversibly-retrofitted for butanol production, that is, the ethanol production plant may be converted for butanol production, but can also revert to an ethanol production. The present invention also relates to processes for recovering butanol produced in a fermentative process in a butanol production plant that may be converted to ethanol production plant.
    Type: Application
    Filed: July 3, 2017
    Publication date: October 19, 2017
    Inventors: Steven Christopher Barr, Robert W. Sylvester, Joseph J. Zaher
  • Patent number: 9732362
    Abstract: The present invention relates to processes for recovering butanol produced in a fermentative process using, for example, an ethanol production plant which has been reversibly-retrofitted for butanol production, that is, the ethanol production plant may be converted for butanol production, but can also revert to an ethanol production. The present invention also relates to processes for recovering butanol produced in a fermentative process in a butanol production plant that may be converted to ethanol production plant.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: August 15, 2017
    Assignee: Butamax Advanced Biofuels LLC
    Inventors: Steven Christopher Barr, Robert W. Sylvester, Joseph J. Zaher
  • Patent number: 9342482
    Abstract: A computing device uses a recursive discrete Fourier transform (RDFT) engine to reduce time required by a frequency transform module, memory required to hold intermediate products, and/or computing resources used for the testing. In an embodiment the windowing function is integrated and processed simultaneously with the recursive DFT funcions. A frequency-bin power module is configured to determine the frequency bin within the set of frequency bins that has a greatest signal power at various levels of recursion.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: May 17, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Joonsung Park, Srinadh Madhavapeddi, Christopher Barr
  • Publication number: 20140311889
    Abstract: The present invention relates to processes to remove butanol and other product alcohols from a fermentation broth employing vacuum vaporization.
    Type: Application
    Filed: December 6, 2012
    Publication date: October 23, 2014
    Inventors: Joseph J. Zaher, Steven Christopher Barr, Robert W. Sylvester, Aidan Hurley
  • Publication number: 20140234929
    Abstract: The present invention relates to processes for recovering butanol produced in a fermentative process using, for example, an ethanol production plant which has been reversibly-retrofitted for butanol production, that is, the ethanol production plant may be converted for butanol production, but can also revert to an ethanol production. The present invention also relates to processes for recovering butanol produced in a fermentative process in a butanol production plant that may be converted to ethanol production plant.
    Type: Application
    Filed: April 25, 2014
    Publication date: August 21, 2014
    Applicant: BUTAMAX ADVANCED BIOFUELS LLC
    Inventors: Steven Christopher BARR, Robert W. SYLVESTER, Joseph J. ZAHER
  • Publication number: 20140136138
    Abstract: A computing device uses a recursive discrete Fourier transform (RDFT) engine to reduce time required by a frequency transform module, memory required to hold intermediate products, and/or computing resources used for the testing. In an embodiment the windowing function is integrated and processed simultaneously with the recursive DFT funcions. A frequency-bin power module is configured to determine the frequency bin within the set of frequency bins that has a greatest signal power at various levels of recursion.
    Type: Application
    Filed: November 12, 2012
    Publication date: May 15, 2014
    Applicant: Texas Instruments, Incorporated
    Inventors: Joonsung Park, Srinadh Madhavapeddi, Christopher Barr
  • Publication number: 20060112755
    Abstract: An apparatus and a method for determining wear of a feedscrew and barrel combination includes measuring wear of the barrel using a gage plug in a measuring aperture in the barrel or an ultrasonic thickness gauge and measuring feedscrew wear with an eddy current sensor or a dial indicator mounted in the measuring aperture. A system gathers wear data from various production installations, analyzes the data to predict remaining life of the barrel and the feedscrew and generates an order for replacement parts to be manufactured and shipped just prior to the end of the remaining life.
    Type: Application
    Filed: January 12, 2006
    Publication date: June 1, 2006
    Inventors: Jeffrey Kuhman, Richard Harris, Christopher Barr
  • Publication number: 20050136156
    Abstract: The invention provides a food packaging system that preferably includes a system for facilitating progressive or incremental delivery of individual, single-serving hand-held food items to the consumer, along with a carton for containing a plurality of the food items and associated delivery systems. The packaging system provides protection for the food items during packaging, shipping handling, retail display and consumer use, and also makes them readily accessible to the consumer, without requiring direct manual contact with the food item. The packaging system preferably includes a separate disposable delivery system for each food item.
    Type: Application
    Filed: February 14, 2005
    Publication date: June 23, 2005
    Inventors: Christopher Barr, Mark Mikol
  • Patent number: 6781411
    Abstract: A flip flop (30) comprising a master stage (34) comprising a first plurality of transistors (54, 56), wherein each of the first plurality of transistors comprises a selective conductive path between a source and drain. The flip flop also comprises a slave stage (42) comprising a second plurality of transistors (60, 62, 64, 66), wherein each of the second plurality of transistors comprises a selective conductive path between a source and drain. For the flip flop, in a low power mode the flip flop is operable to receive a first voltage (VDD) coupled to the selective conductive path for each of the first plurality of transistors. Also in the low power mode, the flip flop is operable to receive a second voltage (VDDL) coupled to the selective conductive path for each of the second plurality of transistors. Lastly, the second voltage is greater than the first voltage in the low power mode.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: August 24, 2004
    Assignee: Texas Instruments Incorporated
    Inventors: Donald E. Steiss, Clive Bittlestone, Peter Cumming, Christopher Barr
  • Publication number: 20030141911
    Abstract: A flip flop (30) comprising a master stage (34) comprising a first plurality of transistors (54, 56), wherein each of the first plurality of transistors comprises a selective conductive path between a source and drain. The flip flop also comprises a slave stage (42) comprising a second plurality of transistors (60, 62, 64, 66), wherein each of the second plurality of transistors comprises a selective conductive path between a source and drain. For the flip flop, in a low power mode the flip flop is operable to receive a first voltage (VDD) coupled to the selective conductive path for each of the first plurality of transistors. Also in the low power mode, the flip flop is operable to receive a second voltage (VDDL) coupled to the selective conductive path for each of the second plurality of transistors. Lastly, the second voltage is greater than the first voltage in the low power mode.
    Type: Application
    Filed: September 27, 2002
    Publication date: July 31, 2003
    Inventors: Donald E. Steiss, Clive Bittlestone, Peter Cumming, Christopher Barr