Patents by Inventor Whee Moon Choi

Whee Moon Choi 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).

  • Advanced oxidation system for treatment of offensive odors and toxic substances of foundry waste and treatment method using the same
    Patent number: 8591806
    Abstract: The present invention provides an advanced oxidation system for the treatment of offensive odors and toxic substances of foundry waste, e.g., sand, and a treatment method using the same, which can effectively remove offensive odors and toxic substances produced during a sand reclamation process for reclamation of foundry waste. For this purpose, an advanced oxidation system for the treatment of offensive odors and toxic substances of foundry waste by implementing a spray device for spraying a diluted solution of hydrogen peroxide onto foundry waste; a stirring device for mixing the foundry waste with the diluted solution of hydrogen peroxide sprayed thereto; an ultraviolet irradiation device for activating the hydrogen peroxide mixed with the foundry waste to produce radicals; and a local exhaust system for collecting dust generated when the foundry waste is mixed with the hydrogen peroxide by the stirring device.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: November 26, 2013
    Assignee: Hyundai Motor Company
    Inventors: Kwang Mo Seong, Whee Moon Choi
  • Separation system for waste foundry sand binder using ultrasonic waves
    Patent number: 8439284
    Abstract: The present invention provides a separation system for a waste foundry sand binder using ultrasonic waves, which can minimize the number of surface treatment processes by inducing interface separation between a foundry sand and a binder, and which further optimizes the working process and reduces the recycling cost of waste foundry sand.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: May 14, 2013
    Assignee: Hyundai Motor Company
    Inventors: Soo Hyun Ha, Whee Moon Choi
  • ADVANCED OXIDATION SYSTEM FOR TREATMENT OF OFFENSIVE ODORS AND TOXIC SUBSTANCES OF FOUNDRY WASTE AND TREATMENT METHOD USING THE SAME
    Publication number: 20130004365
    Abstract: The present invention provides an advanced oxidation system for the treatment of offensive odors and toxic substances of foundry waste, e.g., sand, and a treatment method using the same, which can effectively remove offensive odors and toxic substances produced during a sand reclamation process for reclamation of foundry waste. For this purpose, an advanced oxidation system for the treatment of offensive odors and toxic substances of foundry waste by implementing a spray device for spraying a diluted solution of hydrogen peroxide onto foundry waste; a stirring device for mixing the foundry waste with the diluted solution of hydrogen peroxide sprayed thereto; an ultraviolet irradiation device for activating the hydrogen peroxide mixed with the foundry waste to produce radicals; and a local exhaust system for collecting dust generated when the foundry waste is mixed with the hydrogen peroxide by the stirring device.
    Type: Application
    Filed: September 14, 2011
    Publication date: January 3, 2013
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Kwang Mo Seong, Whee Moon Choi
  • SEPARATION SYSTEM FOR WASTE FOUNDRY SAND BINDER USING ULTRASONIC WAVES
    Publication number: 20120000997
    Abstract: The present invention provides a separation system for a waste foundry sand binder using ultrasonic waves, which can minimize the number of surface treatment processes by inducing interface separation between a foundry sand and a binder, and which further optimizes the working process and reduces the recycling cost of waste foundry sand.
    Type: Application
    Filed: November 4, 2010
    Publication date: January 5, 2012
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Soo Hyun Ha, Whee Moon Choi