Patents by Inventor Hwan-ju Jo

Hwan-ju Jo 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: 10604894
    Abstract: The present invention provides a method of carbonating carbon dioxide with high purity using a paper mill waste sludge by preparing a paper mill waste sludge which is a waste product discharged during the production of papermaking, adding acid to the paper mill waste sludge and reacting the acid therewith to produce a mixed solution and stirring, separating a supernatant of the mixed solution into an eluate, adding a basic substance to the eluate and adjusting pH to precipitate some of the ions in the eluate, and then adding a reaction initiator to the eluate in which some ions are precipitated and removed, and injecting carbon dioxide for a carbonation reaction.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: March 31, 2020
    Assignee: Korea Institute of Geoscience and Mineral Resources
    Inventors: Chi-Wan Jeon, Sang-Won Park, Jun-Hwan Bang, Kyung-Sun Song, Seung-Woo Lee, Hwan-Ju Jo
  • Publication number: 20180258587
    Abstract: The present invention provides a method of carbonating carbon dioxide with high purity using a paper mill waste sludge by preparing a paper mill waste sludge which is a waste product discharged during the production of papermaking, adding acid to the paper mill waste sludge and reacting the acid therewith to produce a mixed solution and stirring, separating a supernatant of the mixed solution into an eluate, adding a basic substance to the eluate and adjusting pH to precipitate some of the ions in the eluate, and then adding a reaction initiator to the eluate in which some ions are precipitated and removed, and injecting carbon dioxide for a carbonation reaction.
    Type: Application
    Filed: November 9, 2017
    Publication date: September 13, 2018
    Applicant: Korea Institute Of Geoscience And Mineral Resources
    Inventors: Chi-Wan JEON, Sang-Won PARK, Jun-Hwan BANG, Kyung-Sun SONG, Seung-Woo LEE, Hwan-Ju JO
  • Publication number: 20150344318
    Abstract: Provided is a method of recycling a high purity ammonium sulfate aqueous solution including: adding slurry obtained by mixing water, aqueous ammonia, and gypsum with each other and a predetermined amount of carbon dioxide to a reactor to performing a carbonation reaction, wherein an ammonium sulfate aqueous solution produced in the reactor is circulated in the reactor.
    Type: Application
    Filed: May 20, 2015
    Publication date: December 3, 2015
    Inventors: MYUNG GYU LEE, YOUNG NAM JANG, HWAN JU JO, SOO CHUN CHAE, HYE-IN WON
  • Patent number: 8379594
    Abstract: A device and method to play back contents according to a reception sensitivity, more specifically, a device and method to select a wireless communication system according to the reception sensitivity of wireless signals such as AirTV signals, digital multimedia broadcasting signals and wireless LAN signals, and playing back received multimedia content. The device includes a communication unit receiving multimedia content through a wireless communication device corresponding to a selection instruction message input by a user among one or more wireless communication devices; a reception sensitivity check unit checking the reception sensitivity of the received multimedia content; and an interface unit outputting the received multimedia content according to the reception sensitivity.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: February 19, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwan-ju Jo, Chee-hwan Yang
  • Publication number: 20070091835
    Abstract: A device and method to play back contents according to a reception sensitivity, more specifically, a device and method to select a wireless communication system according to the reception sensitivity of wireless signals such as AirTV signals, digital multimedia broadcasting signals and wireless LAN signals, and playing back received multimedia content. The device includes a communication unit receiving multimedia content through a wireless communication device corresponding to a selection instruction message input by a user among one or more wireless communication devices; a reception sensitivity check unit checking the reception sensitivity of the received multimedia content; and an interface unit outputting the received multimedia content according to the reception sensitivity.
    Type: Application
    Filed: October 16, 2006
    Publication date: April 26, 2007
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hwan-ju Jo, Chee-hwan Yang
  • Publication number: 20020088854
    Abstract: A technique and a delivery system provides for delivery information on goods. The technique includes the steps of attaching a storage storing information on a receiver to receive the delivery information on goods, reading the information in the attached storage on a delivery route and sending the information to a server, and providing the delivery information on the goods to the delivery information receiver based on receiver information by the server. With these steps, the technique provides the delivery information on the goods to the delivery information receiver during delivering.
    Type: Application
    Filed: November 8, 2001
    Publication date: July 11, 2002
    Inventor: Hwan-Ju Jo