Patents by Inventor Harry Cheung

Harry Cheung 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).

  • AUTOMATED PROCESS WORKFLOW FOR THE ENTIRE MORTGAGE LOAN AND CLOSING PROCESS
    Publication number: 20160140654
    Abstract: A cloud-based mortgage software service to automate the residential mortgage application process by i) presenting a combination of fields, forms, and pages to solicit information from a borrower for a residential mortgage loan application and then comparing that extracted information to some information on trigger conditions for borrower documents needed for the loan. A database contains and indexes information regarding i) mortgage guidelines and requirements for residential mortgage loans.
    Type: Application
    Filed: November 13, 2014
    Publication date: May 19, 2016
    Inventors: Rajesh Pervaje Bhat, Harry Cheung, Jonathan Kirst
  • Method for generating a cold gas
    Publication number: 20010035026
    Abstract: A method for generating refrigeration for application to a heat load, especially at very cold temperatures, using an environmentally benign working gas such as air and using an upstream precooling circuit to reduce or eliminate inefficiencies stemming from warm end pinch.
    Type: Application
    Filed: March 21, 2001
    Publication date: November 1, 2001
    Inventors: Dante Patrick Bonaquist, Harry Cheung, Arun Acharya
  • Method for generating a cold gas
    Patent number: 6301923
    Abstract: A method for generating refrigeration for application to a heat load, especially at very cold temperatures, using an environmentally benign working gas such as air and using an upstream precooling circuit to reduce or eliminate inefficiencies stemming from warm end pinch.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: October 16, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Harry Cheung, Arun Acharya
  • Method for generating a cold gas
    Patent number: 6250096
    Abstract: A method for generating refrigeration for application to a heat load, especially at very cold temperatures, using an environmentally benign working gas such as air and using an upstream precooling circuit to reduce or eliminate inefficiencies stemming from warm end pinch.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: June 26, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Harry Cheung, Arun Acharya
  • Side column cryogenic rectification system for producing lower purity oxygen
    Patent number: 5463871
    Abstract: A cryogenic rectification system employing a double column and an auxiliary side column in which product lower purity oxygen is produced wherein the side column is driven by condensing compressed feed air enabling the system to operate with lower head pressure and thus lower operating costs.
    Type: Grant
    Filed: October 4, 1994
    Date of Patent: November 7, 1995
    Assignee: Praxair Technology, Inc.
    Inventor: Harry Cheung
  • Cryogenic rectification system with improved recovery
    Patent number: 5385024
    Abstract: A cryogenic rectification system wherein nonproduct fluid from a cryogenic rectification plant is compressed and mixed with incoming feed at an intermediate temperature, and the resulting mixture passed into the cryogenic rectification plant enabling production of product with improved recovery especially at elevated pressure.
    Type: Grant
    Filed: September 29, 1993
    Date of Patent: January 31, 1995
    Assignee: Praxair Technology, Inc.
    Inventors: Mark J. Roberts, Harry Cheung
  • Single column cryogenic rectification system for producing nitrogen gas at elevated pressure and high purity
    Patent number: 5303556
    Abstract: A single column lower pressure cryogenic rectification system wherein nitrogen top vapor is condensed against column bottoms, elevated in pressure, and vaporized against elevated pressure fluid to achieve simultaneously high purity and high pressure nitrogen gas product.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: April 19, 1994
    Assignee: Praxair Technology, Inc.
    Inventors: James R. Dray, Mark J. Roberts, Dante P. Bonaquist, Harry Cheung, Paul L. Just, James B. Mize, John H. Royal
  • Cryogenic air separation using random packing
    Patent number: 5237823
    Abstract: A cryogenic air separation system using a random packing section below a section of structured packing and redistributing liquid between sets of random and structured Packing sections.
    Type: Grant
    Filed: March 31, 1992
    Date of Patent: August 24, 1993
    Assignee: Praxair Technology, Inc.
    Inventors: Harry Cheung, Michael J. Lockett, Richard A. Victor
  • Cryogenic rectification system for producing nitrogen and ultra high purity oxygen
    Patent number: 5195324
    Abstract: A cryogenic rectification system wherein bottoms from a single column nitrogen production system are used to produce ultra high purity oxygen in a two column purification system, and bottoms from the first purification column are employed to drive the nitrogen column top condenser to generate additional nitrogen column reflux.
    Type: Grant
    Filed: March 19, 1992
    Date of Patent: March 23, 1993
    Assignee: Prazair Technology, Inc.
    Inventor: Harry Cheung
  • Cryogenic rectification system for enhanced argon production
    Patent number: 5161380
    Abstract: A cryogenic rectification system comprising two cryogenic rectification plants wherein a fluid mixture comprising argon and nitrogen is withdrawn in a defined manner from the first plant and passed into the second plant such that argon production is enhanced to more than offset the additional separation power requirements.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: November 10, 1992
    Assignee: Union Carbide Industrial Gases Technology Corporation
    Inventor: Harry Cheung
  • Method and apparatus for producing elevated pressure nitrogen
    Patent number: 5098457
    Abstract: A method and apparatus for producing elevated pressure nitrogen with improved recovery comprising a primary column and a lower pressure auxiliary column wherein auxiliary column top vapor is condensed, pressurized and passed into the primary column.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: March 24, 1992
    Assignee: Union Carbide Industrial Gases Technology Corporation
    Inventors: Harry Cheung, Dante P. Bonaquist
  • Cryogenic air separation method for the production of oxygen and medium pressure nitrogen
    Patent number: 5074898
    Abstract: A cryogenic air separation method for the production of oxygen and medium pressure nitrogen comprising a primary higher pressure column and an auxiliary smaller lower pressure stripping column wherein primary column bottom liquid is employed as stripping column downflow liquid and primary column top vapor condenses against stripping column bottom liquid to generate stripping vapor.
    Type: Grant
    Filed: April 3, 1990
    Date of Patent: December 24, 1991
    Assignee: Union Carbide Industrial Gases Technology Corporation
    Inventor: Harry Cheung
  • Xenon production system
    Patent number: 5069698
    Abstract: Method and apparatus for improving xenon recovery wherein a liquid containing krypton and xenon is removed from a cryogenic rectification facility at a defined flowrate which selectively improves xenon recovery and is provided into a facility having rare gas production capability.
    Type: Grant
    Filed: November 6, 1990
    Date of Patent: December 3, 1991
    Assignee: Union Carbide Industrial Gases Technology Corporation
    Inventors: Harry Cheung, Michael R. Couche, James R. Dray
  • Dry, high purity nitrogen production process and system
    Patent number: 4934148
    Abstract: Feed air to a prepurifier adsorption system/cryogenic air separation system for dry, high purity nitrogen and/or oxygen production is dried in a membrane dryer preferably characterized by a countercurrent flow path. Drying is enhanced by the use of purge gas on the permeate side of the membrane dryer, which adsorption system or cryogenic air separation system product or waste gas, dried feed air or ambient air being used as purge gas.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: June 19, 1990
    Assignee: Union Carbide Corporation
    Inventors: Ravi Prasad, Oscar W. Haas, Harry Cheung
  • Cryogenic rectification process for producing ultra high purity nitrogen
    Patent number: 4902321
    Abstract: A process for producing ultra high purity nitrogen from nitrogen produced by the cryogenic rectification of air wherein superatomospheric nitrogen is progressively condensed and revaporized to effect rejection of lower boiling impurities without need for additional energy beyond that contained in the nitrogen input.
    Type: Grant
    Filed: March 16, 1989
    Date of Patent: February 20, 1990
    Assignee: Union Carbide Corporation
    Inventor: Harry Cheung
  • Air separation process and apparatus for high argon recovery and moderate pressure nitrogen recovery
    Patent number: 4822395
    Abstract: Process and apparatus to produce argon at high recovery with nitrogen at higher than conventional pressure comprising three columns wherein first column bottoms are passed into the second column, second column bottoms drive a third column top condenser, and argon-containing fluid is passed for separation into the third column from the second column at a point intermediate the points where first column bottoms enter and second column bottoms exit the second column.
    Type: Grant
    Filed: June 2, 1988
    Date of Patent: April 18, 1989
    Assignee: Union Carbide Corporation
    Inventor: Harry Cheung
  • Process and apparatus to produce ultra high purity oxygen from a liquid feed
    Patent number: 4780118
    Abstract: A process and apparatus to produce ultra high purity oxygen comprising serially oriented stripping and absorbing columns having defined flow stream relationships.
    Type: Grant
    Filed: July 28, 1987
    Date of Patent: October 25, 1988
    Assignee: Union Carbide Corporation
    Inventor: Harry Cheung
  • Process and apparatus to produce ultra high purity oxygen from a gaseous feed
    Patent number: 4755202
    Abstract: A process and apparatus to produce ultra high purity oxygen comprising serially oriented absorbing and stripping columns having defined flow stream relationships.
    Type: Grant
    Filed: July 28, 1987
    Date of Patent: July 5, 1988
    Assignee: Union Carbide Corporation
    Inventor: Harry Cheung
  • Process to produce an oxygen-free krypton-xenon concentrate
    Patent number: 4647299
    Abstract: A method to concentrate krypton and xenon in a substantially oxygen-free liquid employing a two-section exchange column, the top section of which is refluxed by a substantially rare gas-free liquid.
    Type: Grant
    Filed: August 16, 1984
    Date of Patent: March 3, 1987
    Assignee: Union Carbide Corporation
    Inventor: Harry Cheung
  • Hybrid nitrogen generator with auxiliary column drive
    Patent number: 4604117
    Abstract: A cryogenic rectification process to produce nitrogen at relatively high purity and yield employing multiple defined feeds to a main rectification column to allow for increased product removal off the top of the main column.
    Type: Grant
    Filed: November 15, 1984
    Date of Patent: August 5, 1986
    Assignee: Union Carbide Corporation
    Inventor: Harry Cheung