Patents by Inventor David Keith

David Keith 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: 20250153095
    Abstract: A carbon dioxide capture facility is disclosed comprising packing formed as a slab, and at least one liquid source. The slab has opposed dominant faces, the opposed dominant faces being at least partially wind penetrable to allow wind to flow through the packing. The at least one liquid source is oriented to direct carbon dioxide absorbent liquid into the packing to flow through the slab. The slab is disposed in a wind flow that has a non-zero incident angle with one of the opposed dominant faces. A method of carbon dioxide capture is also disclosed. Carbon dioxide absorbing liquid is applied into packing in a series of pulses. A gas containing carbon dioxide is flowed through the packing to at least partially absorb the carbon dioxide from the gas into the carbon dioxide absorbing liquid.
    Type: Application
    Filed: November 21, 2024
    Publication date: May 15, 2025
    Inventors: David Keith, Maryam Mahmoudkhani, Alessandro Biglioli, Brandon Hart, Kenton Robert Heidel, Michal Foniok
  • Patent number: 12151202
    Abstract: A carbon dioxide capture facility is disclosed comprising packing formed as a slab, and at least one liquid source. The slab has opposed dominant faces, the opposed dominant faces being at least partially wind penetrable to allow wind to flow through the packing. The at least one liquid source is oriented to direct carbon dioxide absorbent liquid into the packing to flow through the slab. The slab is disposed in a wind flow that has a non-zero incident angle with one of the opposed dominant faces. A method of carbon dioxide capture is also disclosed. Carbon dioxide absorbing liquid is applied into packing in a series of pulses. A gas containing carbon dioxide is flowed through the packing to at least partially absorb the carbon dioxide from the gas into the carbon dioxide absorbing liquid.
    Type: Grant
    Filed: November 21, 2022
    Date of Patent: November 26, 2024
    Assignee: Carbon Engineering ULC
    Inventors: David Keith, Maryam Mahmoudkhani, Alessandro Biglioli, Brandon Hart, Kenton Robert Heidel, Michal Foniok
  • Publication number: 20230158446
    Abstract: A carbon dioxide capture facility is disclosed comprising packing formed as a slab, and at least one liquid source. The slab has opposed dominant faces, the opposed dominant faces being at least partially wind penetrable to allow wind to flow through the packing. The at least one liquid source is oriented to direct carbon dioxide absorbent liquid into the packing to flow through the slab. The slab is disposed in a wind flow that has a non-zero incident angle with one of the opposed dominant faces. A method of carbon dioxide capture is also disclosed. Carbon dioxide absorbing liquid is applied into packing in a series of pulses. A gas containing carbon dioxide is flowed through the packing to at least partially absorb the carbon dioxide from the gas into the carbon dioxide absorbing liquid.
    Type: Application
    Filed: November 21, 2022
    Publication date: May 25, 2023
    Inventors: David Keith, Maryam Mahmoudkhani, Alessandro Biglioli, Brandon Hart, Kenton Robert Heidel, Michal Foniok
  • Patent number: 11504667
    Abstract: A carbon dioxide capture facility is disclosed comprising packing formed as a slab, and at least one liquid source. The slab has opposed dominant faces, the opposed dominant faces being at least partially wind penetrable to allow wind to flow through the packing. The at least one liquid source is oriented to direct carbon dioxide absorbent liquid into the packing to flow through the slab. The slab is disposed in a wind flow that has a non-zero incident angle with one of the opposed dominant faces. A method of carbon dioxide capture is also disclosed. Carbon dioxide absorbing liquid is applied into packing in a series of pulses. A gas containing carbon dioxide is flowed through the packing to at least partially absorb the carbon dioxide from the gas into the carbon dioxide absorbing liquid.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: November 22, 2022
    Assignee: Carbon Engineering Ltd.
    Inventors: David Keith, Maryam Mahmoudkhani, Alessandro Biglioli, Brandon Hart, Kenton Robert Heidel, Michal Foniok
  • Patent number: 10571489
    Abstract: A wafer testing system and associated methods of use and manufacture are disclosed herein. In one embodiment, the wafer test system includes an interposer having a first surface and a second surface facing away from the first surface. The system also includes a wafer translator having a first side facing the second surface of the interposer and a second side facing away from the first side and toward a wafer, the first side carrying a plurality of first terminals at a first scale and the second side carrying a plurality of second terminals at a second scale. The first scale is greater than the second scale.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: February 25, 2020
    Inventors: Aaron Durbin, David Keith, Morgan Johnson
  • Publication number: 20190336909
    Abstract: A carbon dioxide capture facility is disclosed comprising packing formed as a slab, and at least one liquid source. The slab has opposed dominant faces, the opposed dominant faces being at least partially wind penetrable to allow wind to flow through the packing. The at least one liquid source is oriented to direct carbon dioxide absorbent liquid into the packing to flow through the slab. The slab is disposed in a wind flow that has a non-zero incident angle with one of the opposed dominant faces. A method of carbon dioxide capture is also disclosed. Carbon dioxide absorbing liquid is applied into packing in a series of pulses. A gas containing carbon dioxide is flowed through the packing to at least partially absorb the carbon dioxide from the gas into the carbon dioxide absorbing liquid.
    Type: Application
    Filed: April 15, 2019
    Publication date: November 7, 2019
    Inventors: David Keith, Maryam Mahmoudkhani, Alessandro Biglioli, Brandon Hart, Kenton Robert Heidel, Michal Foniok
  • Publication number: 20170219629
    Abstract: A wafer testing system and associated methods of use and manufacture are disclosed herein. In one embodiment, the wafer test system includes an interposer having a first surface and a second surface facing away from the first surface. The system also includes a wafer translator having a first side facing the second surface of the interposer and a second side facing away from the first side and toward a wafer, the first side carrying a plurality of first terminals at a first scale and the second side carrying a plurality of second terminals at a second scale. The first scale is greater than the second scale.
    Type: Application
    Filed: February 15, 2017
    Publication date: August 3, 2017
    Applicant: Translarity, Inc.
    Inventors: Aaron Durbin, David Keith, Morgan Johnson
  • Patent number: 9612259
    Abstract: A wafer testing system and associated methods of use and manufacture are disclosed herein. In one embodiment, the wafer testing system includes an assembly for releaseably attaching a wafer to a wafer translator and the wafer translator to an interposer by means of separately operable vacuums, or pressure differentials. The assembly includes a wafer translator support ring coupled to the wafer translator, wherein a first flexible material extends from the wafer translator support ring so as to enclose the space between the wafer translator and the interposer so that the space may be evacuated by a first vacuum through one or more first evacuation paths. The assembly can further include a wafer support ring coupled to the wafer and the chuck, wherein a second flexible material extends from wafer support ring so as to enclose the space between the wafer and the wafer translator so that the space may be evacuated by a second vacuum through one or more second evacuation pathways.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: April 4, 2017
    Assignee: Translarity, Inc.
    Inventors: Aaron Durbin, David Keith, Morgan Johnson
  • Patent number: 9095813
    Abstract: A carbon dioxide capture facility is disclosed comprising packing formed as a slab, and at least one liquid source. The slab has opposed dominant faces, the opposed dominant faces being at least partially wind penetrable to allow wind to flow through the packing. The at least one liquid source is oriented to direct carbon dioxide absorbent liquid into the packing to flow through the slab. The slab is disposed in a wind flow that has a non-zero incident angle with one of the opposed dominant faces. A method of carbon dioxide capture is also disclosed. Carbon dioxide absorbing liquid is applied into packing in a series of pulses. A gas containing carbon dioxide is flowed through the packing to at least partially absorb the carbon dioxide from the gas into the carbon dioxide absorbing liquid.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: August 4, 2015
    Assignee: Carbon Engineering Limited Partnership
    Inventors: David Keith, Maryam Mahmoudkhani, Alessandro Biglioli, Brandon Hart, Kenton Heidel, Mike Foniok
  • Publication number: 20150015292
    Abstract: A wafer testing system and associated methods of use and manufacture are disclosed herein. In one embodiment, the wafer testing system includes an assembly for releaseably attaching a wafer to a wafer translator and the wafer translator to an interposer by means of separately operable vacuums, or pressure differentials. The assembly includes a wafer translator support ring coupled to the wafer translator, wherein a first flexible material extends from the wafer translator support ring so as to enclose the space between the wafer translator and the interposer so that the space may be evacuated by a first vacuum through one or more first evacuation paths. The assembly can further include a wafer support ring coupled to the wafer and the chuck, wherein a second flexible material extends from wafer support ring so as to enclose the space between the wafer and the wafer translator so that the space may be evacuated by a second vacuum through one or more second evacuation pathways.
    Type: Application
    Filed: September 26, 2014
    Publication date: January 15, 2015
    Inventors: Aaron Durbin, David Keith, Morgan Johnson
  • Patent number: 8872533
    Abstract: A wafer testing system and associated methods of use an manufacture are disclosed herein. In one embodiment, the wafer testing system includes an assembly for releaseably attaching a wafer to a wafer translator and the wafer translator to an interposer by means of separately operable vacuums, or pressure differentials. The assembly includes a wafer translator support ring coupled to the wafer translator, wherein a first flexible material extends from the wafer translator support ring so as to enclose the space between the wafer translator and the interposer so that the space may be evacuated by a first vacuum through one or more first evacuation paths. The assembly can further include a wafer support ring coupled to the wafer and the chuck, wherein a second flexible material extends from wafer support ring so as to enclose the space between the wafer and the wafer translator so that the space may be evacuated by a second vacuum through one or more second evacuation pathways.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: October 28, 2014
    Assignee: Advanced Inquiry Systems, Inc.
    Inventors: Aaron Durbin, David Keith, Morgan Johnson
  • Patent number: 8405414
    Abstract: A wafer testing system and associated methods of use and manufacture are disclosed herein. In one embodiment, the wafer testing system includes an assembly for releaseably attaching a wafer to a wafer translator and the wafer translator to an interposer by means of separately operable vacuums, or pressure differentials. The assembly includes a wafer translator support ring coupled to the wafer translator, wherein a first flexible material extends from the wafer translator support ring so as to enclose the space between the wafer translator and the interposer so that the space may be evacuated by a first vacuum through one or more first evacuation paths. The assembly can further include a wafer support ring coupled to the wafer and the chuck, wherein a second flexible material extends from wafer support ring so as to enclose the space between the wafer and the wafer translator so that the space may be evacuated by a second vacuum through one or more second evacuation pathways.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: March 26, 2013
    Assignee: Advanced Inquiry Systems, Inc.
    Inventors: Aaron Durbin, David Keith, Morgan T. Johnson
  • Publication number: 20120074976
    Abstract: A wafer testing system and associated methods of use and manufacture are disclosed herein. In one embodiment, the wafer testing system includes an assembly for releaseably attaching a wafer to a wafer translator and the wafer translator to an interposer by means of separately operable vacuums, or pressure differentials. The assembly includes a wafer translator support ring coupled to the wafer translator, wherein a first flexible material extends from the wafer translator support ring so as to enclose the space between the wafer translator and the interposer so that the space may be evacuated by a first vacuum through one or more first evacuation paths. The assembly can further include a wafer support ring coupled to the wafer and the chuck, wherein a second flexible material extends from wafer support ring so as to enclose the space between the wafer and the wafer translator so that the space may be evacuated by a second vacuum through one or more second evacuation pathways.
    Type: Application
    Filed: September 28, 2011
    Publication date: March 29, 2012
    Applicant: Advanced Inquiry Systems, Inc.
    Inventors: Aaron Durbin, David Keith, Morgan T. Johnson
  • Patent number: 8119091
    Abstract: A method of carbon dioxide capture is disclosed. In a step (a) anhydrous sodium carbonate is separated from a first aqueous solution formed by reacting carbon dioxide and an aqueous solution of sodium hydroxide. In step (b) the anhydrous sodium carbonate is treated by causticization to generate carbon dioxide and sodium hydroxide. The first aqueous solution of step (a) is formed by scrubbing a gas containing carbon dioxide with an aqueous solution of sodium hydroxide.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: February 21, 2012
    Assignee: Carbon Engineering Limited Partnership
    Inventors: David Keith, Maryam Mahmoudkhani
  • Publication number: 20110185680
    Abstract: The disclosure relates to a method and apparatus wherein extra mass is added to a profile of a slider zipper prior to the ultrasonic or thermal forming of the end stomps. This results in an end stomp of increased size and height, thereby providing a greater resistance to the slider being pulled from the ends of the zipper.
    Type: Application
    Filed: August 6, 2010
    Publication date: August 4, 2011
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventors: Charles Greco, David Keith, Glyn Russell, Eric P. Plourde, Kenny E. McCracken, Lars Wihlborg
  • Patent number: 7990600
    Abstract: An optically addressed, photoconductive spatial light modulator (SLM) operates in a transmissive mode and is capable of modulating a wide spectrum of visible light. There is no pixel structure or native pixel resolution in the SLM. The SLM has no photodiodes and does not rectify. A light projection system (100) in which one or more SLMs (128, 130, 132) are placed includes a write (image definition) UV light path (102) and a read (illumination) visible light path (104) to form a color image projection display. The write UV light propagates from an image display pattern source (120) and either sequentially or continuously writes image patterns on the photoconductive SLMs. The read visible light propagates through the SLM and is modulated by an electro-optical material, the optical properties of which change in response to the image structure carried by the write light. The result is a high efficiency display system that delivers high resolution color images through a projection lens (190) onto a display screen.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: August 2, 2011
    Assignee: Compound Photonics Limited
    Inventors: Jonathan A. Sachs, Howard V. Goetz, David Keith, Lin Li, Steven H. Linn, Alexander Parfenov, Stephen E. Brice, Terry J. Scheffer, James A. Van Vechten, Jiuzhi Xue
  • Publication number: 20100064890
    Abstract: A carbon dioxide capture facility is disclosed comprising packing formed as a slab, and at least one liquid source. The slab has opposed dominant faces, the opposed dominant faces being at least partially wind penetrable to allow wind to flow through the packing. The at least one liquid source is oriented to direct carbon dioxide absorbent liquid into the packing to flow through the slab. The slab is disposed in a wind flow that has a non-zero incident angle with one of the opposed dominant faces. A method of carbon dioxide capture is also disclosed. Carbon dioxide absorbing liquid is applied into packing in a series of pulses. A gas containing carbon dioxide is flowed through the packing to at least partially absorb the carbon dioxide from the gas into the carbon dioxide absorbing liquid.
    Type: Application
    Filed: August 21, 2009
    Publication date: March 18, 2010
    Inventors: David Keith, Maryam Mahmoudkhani, Alessandro Biglioli, Brandon Hart, Kenton Heidel, Mike Foniok
  • Publication number: 20100034724
    Abstract: A method of carbon dioxide capture is disclosed. In a step (a) anhydrous sodium carbonate is separated from a first aqueous solution formed by reacting carbon dioxide and an aqueous solution of sodium hydroxide. In step (b) the anhydrous sodium carbonate is treated by causticization to generate carbon dioxide and sodium hydroxide. The first aqueous solution of step (a) is formed by scrubbing a gas containing carbon dioxide with an aqueous solution of sodium hydroxide.
    Type: Application
    Filed: June 19, 2009
    Publication date: February 11, 2010
    Inventors: David Keith, Maryam Mahmoudkhani
  • Publication number: 20080239458
    Abstract: An optically addressed, photoconductive spatial light modulator (SLM) operates in a transmissive mode and is capable of modulating a wide spectrum of visible light. There is no pixel structure or native pixel resolution in the SLM. The SLM has no photodiodes and does not rectify. A light projection system (100) in which one or more SLMs (128, 130, 132) are placed includes a write (image definition) UV light path (102) and a read (illumination) visible light path (104) to form a color image projection display. The write UV light propagates from an image display pattern source (120) and either sequentially or continuously writes image patterns on the photoconductive SLMs. The read visible light propagates through the SLM and is modulated by an electro-optical material, the optical properties of which change in response to the image structure carried by the write light. The result is a high efficiency display system that delivers high resolution color images through a projection lens (190) onto a display screen.
    Type: Application
    Filed: May 24, 2005
    Publication date: October 2, 2008
    Inventors: Jonathan A. Sachs, Howard V. Goetz, David Keith, Lin Li, Steven H. Linn, Alexander Parfenov, Stephen E. Brice, Terry Scheffer, James A. Van Vechten, Jiuzhi Xue
  • Publication number: 20070047850
    Abstract: A flexible reclosable container with a header strip, fastener elements, and a slider. The header strip preferably extends from the mouth of the bag, and includes a line of weakness for easy tear off of the bag. The slider and profiles are arranged such that the mouth of the bag is substantially open.
    Type: Application
    Filed: August 21, 2006
    Publication date: March 1, 2007
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventors: David Keith, Paul Edelman