Patents by Inventor Won-Il Joo

Won-Il Joo 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: 10723642
    Abstract: The present invention provides a water treatment device comprising: a filtering unit for filtering raw water; a storing unit comprising a first chamber for storing purified water, which has passed through at least a predetermined number of filters provided in the filtering unit and thus has been filtered, and a second chamber, the volume of which changes according to the volume change of the first chamber; an extraction unit installed to provide the user with the purified water that has been filtered; an sterilizing water supply unit for supplying sterilizing water in order to sterilize/disinfect the storing unit; and a control unit for controlling the driving of the sterilizing water supply unit and the opening/closing of a channel for supplying the sterilizing water.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: July 28, 2020
    Assignee: Coway Co., Ltd
    Inventors: Hyoung-Min Moon, Sung-Han Yun, Won-Il Joo, Tae-Seong Kwon, Sang-Hyeon Kang
  • Publication number: 20180078884
    Abstract: A flow tube connection module and a water purifier including the same are provided. The flow tube connection module includes a housing having a coupling space in which a first flow tube and a second flow tube are connected to each other; a tube connecting member provided in the coupling space and connecting the first flow tube and the second flow tube to each other; an enlarged coupling portion provided in the housing; a coupling body coupled to the enlarged coupling portion to connect a plurality of the housings; and a separation prevention cover or a connection release member assisting the first flow tube in being connected to or separated from the tube connecting member.
    Type: Application
    Filed: March 29, 2016
    Publication date: March 22, 2018
    Inventors: Won-Il JOO, Sang-Hyeon KANG, Geun-Sang RYU, Ji-Hyeon HWANG
  • Publication number: 20110220559
    Abstract: There is provided a water purifying filter assembly module that a water purifying filter can be easily released from or assembled with. A water purifying filter assembly module according to an aspect of the invention may include: a filter assembly head having a water purifying filter assembled on one side thereof, the filter assembly head configured such that water to be filtered flows into the water purifying filter and the water, filtered through the water purifying filter, is discharged to an outside thereof; and a module body having the filter assembly head rotatably provided therein, the water purifying filter being released from or assembled on the filter assembly head as the water purifying filter is aligned and rotates with the filter assembly head.
    Type: Application
    Filed: June 30, 2010
    Publication date: September 15, 2011
    Applicant: Woongjin Coway Co., Ltd.
    Inventors: Won Il Joo, In Du Choi, Jung Hwan Lee, Hyun Young Kim
  • Patent number: 6678373
    Abstract: A shortcut dialing apparatus for a telephone set is disclosed. The apparatus includes a plurality of ROMs for storing telephone numbers therein, a plurality of ROM cards including a corresponding ROM among the ROMs and electrically and detachably being engaged with a main body, a ROM card receiving unit formed in the main body for receiving the ROM card therein, a plurality of selection switches for selectively outputting the telephone number stored in the ROMs, a CPU for scanning the selection switch pushed by a user among the selection switches and outputting a data corresponding to the telephone number stored in the ROM, a DTMF signal generator for outputting a DTMF signal corresponding to the data, and a speaker for receiving the DTMF signal and outputting a sound for thereby detachably installing a ROM card with a ROM into a main body, storing a plurality of telephone numbers into the ROM, and transmitting a corresponding telephone number based on a one-touch operation of the button.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: January 13, 2004
    Inventor: Won-Il Joo
  • Publication number: 20030013487
    Abstract: A memory dialing method for telephone is disclosed to ensure a simple and rapid dialing in case that a user depresses numerous buttons to make a domestic call or an international call through a telecommunication company. An abbreviated phone number is recorded in a phone card to thereby directly use the abbreviated dialing or an abbreviated phone number assigning key portion of a phone number and the remaining numbers of the phone number are stored in a different ROM card which is attached and detached to/and from a phone set to thereby make an abbreviated dialing. Thus, the memory dialing method for telephone can be performed at a low cost without any inconvenience.
    Type: Application
    Filed: August 15, 2002
    Publication date: January 16, 2003
    Inventor: Won-Il Joo