Patents by Inventor Alvin Ng

Alvin Ng 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).

  • Membrane-based gas separation processes to separate dehydrogenation reaction products
    Patent number: 10017434
    Abstract: Gas separation processes are provided for separating dehydrogenation reaction products from a raw gas stream to recover hydrocarbons, specifically olefins, such as propylene and iso-butene, as well as unreacted feedstock. The processes employ a sequence of partial condensation steps, interspersed with membrane separation steps to raise the hydrocarbon dewpoint of the uncondensed gas, thereby avoiding the use of low-temperature or cryogenic conditions.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: July 10, 2018
    Assignee: Membrane Technology and Research, Inc.
    Inventors: Nicholas P Wynn, Alvin Ng, Douglas Gottschlich, Paul Su, Meijuan Zhou, Sylvie Thomas-Droz
  • Switching to/from voice over long term evolution (VoLTE) for a voice call
    Patent number: 9942803
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may determine that a voice over long term evolution (VoLTE) service has encountered a threshold quantity of failures within a particular period of time. The apparatus may transfer from a VoLTE mode associated with the VoLTE service to another mode for a voice call based on determining that the VoLTE service has encountered the threshold quantity of failures within the particular period of time.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: April 10, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Alvin Ng, Chun Chung Patrick Chan, Tsun Sang Cheong, Tak Wai Wu
  • SWITCHING TO/FROM VOICE OVER LONG TERM EVOLUTION (VOLTE) FOR A VOICE CALL
    Publication number: 20170201911
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may determine that a voice over long term evolution (VoLTE) service has encountered a threshold quantity of failures within a particular period of time. The apparatus may transfer from a VoLTE mode associated with the VoLTE service to another mode for a voice call based on determining that the VoLTE service has encountered the threshold quantity of failures within the particular period of time.
    Type: Application
    Filed: January 11, 2016
    Publication date: July 13, 2017
    Inventors: Alvin Ng, Chun Chung Patrick Chan, Tsun Sang Cheong, Tak Wai Wu
  • Membrane-Based Gas Separation Processes to Produce Synthesis Gas With a High CO Content
    Publication number: 20170088419
    Abstract: A process for producing syngas with a high content of carbon monoxide, reflected in a high CO:CO2 ratio. The process involves integrating membrane-based gas separation and steam methane reforming.
    Type: Application
    Filed: December 7, 2016
    Publication date: March 30, 2017
    Applicant: Membrane Technology and Research, Inc.
    Inventors: Nicholas P. Wynn, Douglas Gottschlich, Alvin Ng
  • Membrane-Based Gas Separation Processes to Separate Dehydrogenation Reaction Products
    Publication number: 20170008822
    Abstract: Gas separation processes are provided for separating dehydrogenation reaction products from a raw gas stream to recover hydrocarbons, specifically olefins, such as propylene and iso-butene, as well as unreacted feedstock. The processes employ a sequence of partial condensation steps, interspersed with membrane separation steps to raise the hydrocarbon dewpoint of the uncondensed gas, thereby avoiding the use of low-temperature or cryogenic conditions.
    Type: Application
    Filed: September 21, 2016
    Publication date: January 12, 2017
    Applicant: Membrane Technology and Research, Inc.
    Inventors: Nicholas P. Wynn, Alvin Ng, Douglas Gottschlich, Paul Su, Meijuan Zhou, Sylvie Thomas-Droz
  • Membrane-based gas separation processes to separate dehydrogenation reaction products
    Patent number: 9517981
    Abstract: Gas separation processes are provided for separating dehydrogenation reaction products from a raw gas stream to recover hydrocarbons, specifically olefins, such as propylene and iso-butene, as well as unreacted feedstock. The processes employ a sequence of partial condensation steps, interspersed with membrane separation steps to raise the hydrocarbon dewpoint of the uncondensed gas, thereby avoiding the use of low-temperature or cryogenic conditions.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: December 13, 2016
    Assignee: Membrane Technology and Research, Inc.
    Inventors: Nicholas P. Wynn, Alvin Ng, Douglas Gottschlich, Paul Su, Meijuan Zhou, Sylvie Thomas-Droz
  • Membrane-Based Gas Separation Processes to Separate Dehydrogenation Reaction Products
    Publication number: 20150158795
    Abstract: Gas separation processes are provided for separating dehydrogenation reaction products from a raw gas stream to recover hydrocarbons, specifically olefins, such as propylene and iso-butene, as well as unreacted feedstock. The processes employ a sequence of partial condensation steps, interspersed with membrane separation steps to raise the hydrocarbon dewpoint of the uncondensed gas, thereby avoiding the use of low-temperature or cryogenic conditions.
    Type: Application
    Filed: December 6, 2013
    Publication date: June 11, 2015
    Applicant: MEMBRANE TECHNOLOGY AND RESEARCH, INC.
    Inventors: Nicholas P. Wynn, Alvin Ng, Douglas Gottschlich, Paul Su, Meijuan Zhou, Sylvie Thomas-Droz
  • Membrane-Based Gas Separation Processes to Produce Synthesis Gas With a High CO Content
    Publication number: 20140264176
    Abstract: A process for producing syngas with a high content of carbon monoxide, reflected in a high CO:CO2 ratio. The process involves integrating membrane-based gas separation and steam methane reforming.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: Membrane Technology and Research, Inc.
    Inventors: Nicholas P. Wynn, Douglas Gottschlich, Alvin Ng
  • Ultrafiltration process
    Patent number: 7946431
    Abstract: An inorganic membrane suitable for ultrafiltration or nanofiltration, and methods for making and using the membrane. The membrane has a organic polymer deposited on the feed surface, but is not able to perform separations by solution-diffusion.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: May 24, 2011
    Assignee: Membrane Technology and Research, Inc.
    Inventors: Ingo Pinnau, Alvin Ng, Jennifer Ly, Anurag P Mairal
  • ULTRAFILTRATION PROCESS
    Publication number: 20110100914
    Abstract: An inorganic membrane suitable for ultrafiltration or nanofiltration, and methods for making and using the membrane. The membrane has a organic polymer deposited on the feed surface, but is not able to perform separations by solution-diffusion.
    Type: Application
    Filed: July 9, 2010
    Publication date: May 5, 2011
    Applicant: MEMBRANE TECHNOLOGY AND RESEARCH, INC
    Inventors: Anurag P. Mairal, Jennifer Ly, Alvin Ng, Ingo Pinnau
  • Ethanol recovery process
    Patent number: 7732173
    Abstract: A process for producing and recovering light alcohols, particularly ethanol, alcohol mixtures containing ethanol, and ABE mixtures (alcohol mixtures containing acetone, butanol and ethanol), using a combination of steps including fermentation, first membrane separation, dephlegmation and dehydration by second membrane separation.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: June 8, 2010
    Assignee: Membrane Technology and Research, Inc.
    Inventors: Anurag P. Mairal, Alvin Ng, Richard W. Baker, Ivy Huang, Jennifer Ly
  • Ethanol recovery process
    Publication number: 20070031954
    Abstract: A process for producing and recovering light alcohols, particularly ethanol, alcohol mixtures containing ethanol, and ABE mixtures (alcohol mixtures containing acetone, butanol and ethanol), using a combination of steps including fermentation, first membrane separation, dephlegmation and dehydration by second membrane separation.
    Type: Application
    Filed: July 28, 2006
    Publication date: February 8, 2007
    Applicant: Membrane Technololgy and Research, Inc.
    Inventors: Anurag Mairal, Alvin Ng, Richard Baker, Ivy Huang, Jennifer Ly
  • Natural gas dehydration apparatus
    Patent number: 7132008
    Abstract: A process and corresponding apparatus for dehydrating gas, especially natural gas. The process includes an absorption step and a membrane pervaporation step to regenerate the liquid sorbent.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: November 7, 2006
    Assignee: Membrane Technology & Research, Inc.
    Inventors: Johannes G Wijmans, Alvin Ng, Anurag P Mairal
  • Treatment of shipboard-generated oily wastewaters
    Patent number: 7018539
    Abstract: A process and apparatus for treating oily wastewater, such as bilge water or ballast water, generated on a ship. The process uses a combination of a centrifugal separation step and a membrane separation step, such as an ultrafiltration step. The membrane separation step uses a dense, non-porous filtration membrane. The process is able to remove both emulsified oil and dissolved oil from the wastewater to low levels.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: March 28, 2006
    Assignee: Membrane Technology and Research, Inc.
    Inventors: Anurag P. Mairal, Alvin Ng, Johannes G. Wijmans, Ingo Pinnau, Jennifer H. Ly
  • Ultrafiltration membrane and process
    Publication number: 20050284814
    Abstract: An inorganic membrane suitable for ultrafiltration or nanofiltration, and methods for making and using the membrane. The membrane has a organic polymer deposited on the feed surface, but is not able to perform separations by solution-diffusion.
    Type: Application
    Filed: June 29, 2004
    Publication date: December 29, 2005
    Applicant: Membrane Technology and Research Inc.
    Inventors: Anurag Mairal, Jennifer Ly, Alvin Ng, Ingo Pinnau
  • Zein recovery using non-porous membranes
    Patent number: 6846909
    Abstract: A membrane process for treating zein solutions to increase the zein concentration in the solution. The process uses a non-porous membrane that preferentially permeates the solvent and rejects the zein. Optionally, the process can be operated as a diafiltration process to yield a concentrate of high zein purity.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: January 25, 2005
    Assignee: Membrane Technology and Research, Inc.
    Inventors: Anurag P. Mairal, Alvin Ng, Johannes G. Wijmans
  • Zein recovery using non-porous membranes
    Publication number: 20040230041
    Abstract: A membrane process for treating zein solutions to increase the zein concentration in the solution. The process uses a non-porous membrane that preferentially permeates the solvent and rejects the zein. Optionally, the process can be operated as a diafiltration process to yield a concentrate of high zein purity.
    Type: Application
    Filed: May 14, 2003
    Publication date: November 18, 2004
    Applicant: Membrane Technology and Research, Inc.
    Inventors: Anurag P. Mairal, Alvin Ng, Johannes G. Wijmans
  • Natural gas dehydration apparatus
    Publication number: 20040206242
    Abstract: A process and corresponding apparatus for dehydrating gas, especially natural gas. The process includes an absorption step and a membrane pervaporation step to regenerate the liquid sorbent.
    Type: Application
    Filed: May 6, 2004
    Publication date: October 21, 2004
    Applicant: Membrane Technology and Research, Inc.
    Inventors: Johannes G. Wijmans, Alvin Ng, Anurag P. Mairal
  • Natural gas dehydration process and apparatus
    Patent number: 6789288
    Abstract: A process and corresponding apparatus for dehydrating gas, especially natural gas. The process includes an absorption step and a membrane pervaporation step to regenerate the liquid sorbent.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: September 14, 2004
    Assignee: Membrane Technology and Research, Inc.
    Inventors: Johannes G. Wijmans, Alvin Ng, Anurag P. Mairal
  • Display screen with a graphical user interface for auto-regulation of cerebrovascular perfusion
    Patent number: D990485
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: June 27, 2023
    Assignee: Medical Informatics Corp.
    Inventors: Eric Snover, Alvin Ng, Alexander Csicsery-Ronay, Vincent Gagne