Patents by Inventor Garret Chi-Ho Lau

Garret Chi-Ho Lau 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).

  • Patent number: 10654024
    Abstract: Disclosed are novel, as-crystallized RHO zeolite compositions with improved uniformity in morphology. These RHO compositions are useful for preparing cation-exchanged RHO zeolites that can be used as adsorbents for oxygen and/or nitrogen with improved properties. The adsorbents can be used in pressure swing adsorption processes for selectively adsorbing oxygen and/or nitrogen from feed streams such as an air stream or crude argon stream. Also disclosed are novel methods of preparing RHO zeolites with improved morphology control.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: May 19, 2020
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Elizabeth M. Seibel, William Jack Casteel, Jr., Garret Chi-Ho Lau, Roger Dean Whitley
  • Patent number: 10646848
    Abstract: Disclosed herein are novel RHO zeolites useful as kinetically selective adsorbents for oxygen and/or nitrogen. The adsorbents can be used in pressure swing adsorption processes for selectively adsorbing oxygen and/or nitrogen from feed streams such as an air stream or crude argon stream. Also disclosed are novel methods of preparing RHO zeolites, including in particular mixed-cation RHO zeolites.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: May 12, 2020
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Magdalena M. Lozinska, Paul A. Wright, Elliott L. Bruce, William Jack Casteel, Jr., Shubhra Jyoti Bhadra, Robert Quinn, Garret Chi-Ho Lau, Erin Marie Sorensen, Roger Dean Whitley, Timothy Christopher Golden, Mohammad Ali Kalbassi
  • Publication number: 20200101438
    Abstract: Disclosed are novel, as-crystallized RHO zeolite compositions with improved uniformity in morphology. These RHO compositions are useful for preparing cation-exchanged RHO zeolites that can be used as adsorbents for oxygen and/or nitrogen with improved properties. The adsorbents can be used in pressure swing adsorption processes for selectively adsorbing oxygen and/or nitrogen from feed streams such as an air stream or crude argon stream. Also disclosed are novel methods of preparing RHO zeolites with improved morphology control.
    Type: Application
    Filed: September 28, 2018
    Publication date: April 2, 2020
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Elizabeth M. Seibel, William Jack Casteel, JR., Garret Chi-Ho Lau, Roger D. Whitley
  • Publication number: 20190388868
    Abstract: An adsorbent for removing CO2 from a gas mixture, the adsorbent comprising alumina and a carbonate compound where the carbonate to alumina IR absorbance intensity ratio is reduced by washing the adsorbent with water. The disclosure also describes a method of making adsorbent particles, process for removing CO2 from a gas mixture using the adsorbent, and an adsorption unit using the adsorbent.
    Type: Application
    Filed: August 27, 2019
    Publication date: December 26, 2019
    Applicant: Air Products and Chemicals, Inc.
    Inventors: GARRET CHI-HO LAU, ERIN MARIE SORENSEN, FRED WILLIAM TAYLOR, TIMOTHY CHRISTOPHER GOLDEN, ROBERT QUINN, WILLIAM JACK CASTEEL, JR.
  • Patent number: 10252242
    Abstract: An adsorbent for removing CO2 from a gas mixture, the adsorbent comprising alumina and a carbonate compound where the carbonate to alumina IR absorbance intensity ratio is reduced by washing the adsorbent with water. The disclosure also describes a method of making adsorbent particles, process for removing CO2 from a gas mixture using the adsorbent, and an adsorption unit using the adsorbent.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: April 9, 2019
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Garret Chi-Ho Lau, Erin Marie Sorensen, Fred William Taylor, Timothy Christopher Golden, Robert Quinn, William Jack Casteel, Jr.
  • Publication number: 20190091652
    Abstract: Disclosed herein are novel RHO zeolites useful as kinetically selective adsorbents for oxygen and/or nitrogen. The adsorbents can be used in pressure swing adsorption processes for selectively adsorbing oxygen and/or nitrogen from feed streams such as an air stream or crude argon stream. Also disclosed are novel methods of preparing RHO zeolites, including in particular mixed-cation RHO zeolites.
    Type: Application
    Filed: September 28, 2017
    Publication date: March 28, 2019
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Magdalena M. Lozinska, Paul A. Wright, Elliott L. Bruce, William Jack Casteel, JR., Shubhra Jyoti Bhadra, Robert Quinn, Garret Chi-Ho Lau, Erin Marie Sorensen, Roger Dean Whitley, Timothy Christopher Golden, Mohammad Ali Kalbassi
  • Publication number: 20180264433
    Abstract: An adsorbent for removing CO2 from a gas mixture, the adsorbent comprising alumina and a carbonate compound where the carbonate to alumina IR absorbance intensity ratio is reduced by washing the adsorbent with water. The disclosure also describes a method of making adsorbent particles, process for removing CO2 from a gas mixture using the adsorbent, and an adsorption unit using the adsorbent.
    Type: Application
    Filed: February 23, 2018
    Publication date: September 20, 2018
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Garret Chi-Ho Lau, Erin Marie Sorensen, Fred William Taylor, Timothy Christopher Golden, Robert Quinn, William Jack Casteel, JR.
  • Publication number: 20180264432
    Abstract: An adsorbent for removing CO2 from a gas mixture, the adsorbent comprising alumina and a carbonate compound where the carbonate to alumina IR absorbance intensity ratio is reduced by washing the adsorbent with water. The disclosure also describes a method of making adsorbent particles, process for removing CO2 from a gas mixture using the adsorbent, and an adsorption unit using the adsorbent.
    Type: Application
    Filed: March 17, 2017
    Publication date: September 20, 2018
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Garret Chi-Ho Lau, Erin Marie Sorensen, Fred William Taylor, Timothy Christopher Golden, Robert Quinn, William Jack Casteel, JR.
  • Patent number: 9925514
    Abstract: An adsorbent having a composition comprising at least 90% chabazite where the chabazite is a single phase chabazite having an Si/Al ratio of 1.2 to 1.8, the chabazite includes a mixture of at least two types of cations, and each of the at least two types of cations are in a molar ratio relative to Al of at least 0.05.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: March 27, 2018
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Charles Gardner Coe, Christopher Robert Bongo, Geoffrey John Ochs, Marissa Ann Bonanno, Garret Chi-Ho Lau, William Jack Casteel, Jr., Qiao Zhao, Roger Dean Whitley, Erin Marie Sorensen
  • Publication number: 20170239641
    Abstract: A method for preparing an adsorbent is disclosed that includes mixing an NaY zeolite, aqueous Al(OH)3, and aqueous KOH, and then heating the resultant mixture for an allotted amount of time to achieve a composition comprising at least 90% single phase chabazite having an Si/Al ratio of 1.0 to 2.2.
    Type: Application
    Filed: February 22, 2016
    Publication date: August 24, 2017
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Charles Gardner Coe, Geoffrey John Ochs, Marissa Ann Bonanno, Christopher Robert Bongo, William Jack Casteel, JR., Garret Chi-Ho Lau, Qiao Zhao, Roger Dean Whitley, Erin Marie Sorensen
  • Publication number: 20170239640
    Abstract: An adsorbent having a composition comprising at least 90% chabazite where the chabazite is a single phase chabazite having an Si/Al ratio of 1.2 to 1.8, the chabazite includes a mixture of at least two types of cations, and each of the at least two types of cations are in a molar ratio relative to Al of at least 0.05.
    Type: Application
    Filed: February 22, 2016
    Publication date: August 24, 2017
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Charles Gardner Coe, Christopher Robert Bongo, Geoffrey John Ochs, Marissa Ann Bonanno, Garret Chi-Ho Lau, William Jack Casteel, JR., Qiao Zhao, Roger Dean Whitley, Erin Marie Sorensen
  • Patent number: 9708188
    Abstract: Methods and systems for purifying argon from a crude argon stream are disclosed, employing pressure swing adsorption at cold temperatures from ?186° C. to ?20° C.; more preferably from ?150° C. to ?50° C.; and most preferably from ?130° C. to ?80° C. with oxygen-selective zeolite adsorbent. In some embodiments, the oxygen-selective zeolite adsorbent is a 4A zeolite, a chabazite, or a combination thereof.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: July 18, 2017
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Shubhra Jyoti Bhadra, Roger Dean Whitley, Garret Chi-Ho Lau, David Ross Graham, Donn Michael Herron, Qiao Zhao, Erin Marie Sorensen
  • Patent number: 9669349
    Abstract: A method of separating oxygen from an oxygen-containing fluid stream is disclosed, the method including the step of contacting the oxygen-containing fluid stream with an oxygen-selective zeolite adsorbent comprising at least 90% chabazite, wherein the chabazite is a single phase chabazite having an Si/Al ratio of 1.2 to 1.8. The single phase chabazite may comprise a mixture of at least two types of cations.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: June 6, 2017
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Garret Chi-Ho Lau, Qiao Zhao, Roger Dean Whitley, Erin Marie Sorensen, Charles Gardner Coe, William Jack Casteel, Jr., Geoffrey John Ochs, Christopher Robert Bongo, Marissa Ann Bonanno