Patents by Inventor Dong Yeol Choi

Dong Yeol 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).

  • Publication number: 20170135558
    Abstract: The present invention relates to a system and method for managing an endoscopic scope, the system comprising: multiple endoscope test devices (21) including an endoscopic scope (212) having an RFID chip (211) for storing endoscopic scope identification (ID) data embedded therein, an RFID reader (216) for reading the endoscopic scope ID data, and an endoscope control unit (213) for receiving the endoscopic scope ID data from the RFID reader (216), outputting the endoscopic scope ID data to an endoscope management server (10), and receiving record data of the endoscope test devices (21); multiple disinfection devices (32) comprising disinfection devices (32) including an RFID reader (322) for reading the endoscopic scope ID data from the RFID chip (211) of the endoscopic scope (212), the multiple disinfection devices (32) including RFID readers (322) for reading the endoscopic scope ID data from the RFID chip (211) mounted on the disinfected endoscopic scope (212) respectively and a disinfection irrigation cont
    Type: Application
    Filed: March 20, 2015
    Publication date: May 18, 2017
    Inventors: Dae Myung CHOI, Dong Yeol CHOI
  • Publication number: 20170027420
    Abstract: The present invention relates to an automatic endoscope leakage inspection apparatus and an inspection method thereof. The endoscope includes RFID tags having unique identification information depending on the types of various endoscopes, and the automatic endoscope leakage inspection apparatus includes an RFID module for reading the unique identification information of the endoscope from the RFID tags. The automatic endoscope leakage inspection apparatus manages the endoscope information depending on the types of various endoscopes, reads the unique identification information on the endoscope using an RF communication network, selects one piece of information on the endoscope corresponding to the read unique identification information and automatically processes the leakage inspection by the endoscope.
    Type: Application
    Filed: March 10, 2015
    Publication date: February 2, 2017
    Inventors: Dong Yeol CHOI, Jeong Hui PARK, Sam Jong KIM
  • Patent number: 9193897
    Abstract: The present invention relates to a composition for an antifreeze liquid or a coolant. The present invention provides the composition for the antifreeze liquid or the coolant comprising: (a) a glycol-based antifreeze agent; (b) a cyclo hexane dicarboxylic acid; and (c) a non-reduced polyol. Generally, a mixture of mono- or dicarboxylic acid, which is used as a corrosion inhibitor agent, and an inorganic additive is prone to cavitation erosion and corrosion of gaps, but when a composition is comprised by using in parallel the cyclo hexane dicarboxylic acid and the non-reduced polyol, a synergy effect is created, thereby exhibiting a superior corrosion prevention effect with respect to cavitation erosion and corrosion of gaps inside a cooling apparatus.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: November 24, 2015
    Assignee: KUKDONG JEYEN COMPANY LIMITED
    Inventors: Jae Yoon Park, Chang Yeol Jo, Dong Yeol Choi
  • Patent number: 9193896
    Abstract: A composition for the antifireeze liquid or the coolant includes a cyclo hexane dicarboxylic acid, an azole- or thiazole-based inhibitor, and a metal from an element of group 2, group 5, group 6, or group 7. The composition of the present invention has increased corrosion resistance at a lower density by not containing organic additives, and has a better pH buffering property due to enhanced thermal oxidation stability at a high temperature. Even after a long-term operation for over 200000 km, the composition of the present invention maintains a metal corrosion resistance capability, the appearance of a water pump impeller and the inside of a radiator tube including aluminum remains decent, and the composition has a superior corrosion resistance effect with respect to internal metal parts even after an operational test, thereby allowing use of the composition for the antifreeze liquid or the coolant having a long life.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: November 24, 2015
    Assignee: KUKDONG JEYEN COMPANY LIMITED
    Inventors: Jae Yoon Park, Chang Yeol Jo, Dong Yeol Choi
  • Publication number: 20140223930
    Abstract: The present invention relates to a composition for an antifreeze liquid or a coolant. The present invention provides the composition for the antifreeze liquid or the coolant comprising: (a) a glycol-based antifreeze agent; (b) a cyclo hexane dicarboxylic acid; and (c) a non-reduced polyol. Generally, a mixture of mono- or dicarboxylic acid, which is used as a corrosion inhibitor agent, and an inorganic additive is prone to cavitation erosion and corrosion of gaps, but when a composition is comprised by using in parallel the cyclo hexane dicarboxylic acid and the non-reduced polyol, a synergy effect is created, thereby exhibiting a superior corrosion prevention effect with respect to cavitation erosion and corrosion of gaps inside a cooling apparatus.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 14, 2014
    Applicant: KUKDONG JEYEN COMPANY LIMITED
    Inventors: Jae Yoon Park, Chang Yeol Jo, Dong Yeol Choi
  • Publication number: 20140223929
    Abstract: A composition for the antifireeze liquid or the coolant includes a cyclo hexane dicarboxylic acid, an azole- or thiazole-based inhibitor, and a metal from an element of group 2, group 5, group 6, or group 7. The composition of the present invention has increased corrosion resistance at a lower density by not containing organic additives, and has a better pH buffering property due to enhanced thermal oxidation stability at a high temperature. Even after a long-term operation for over 200000 km, the composition of the present invention maintains a metal corrosion resistance capability, the appearance of a water pump impeller and the inside of a radiator tube including aluminum remains decent, and the composition has a superior corrosion resistance effect with respect to internal metal parts even after an operational test, thereby allowing use of the composition for the antifreeze liquid or the coolant having a long life.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 14, 2014
    Applicant: KUKDONG JEYEN COMPANY LIMITED
    Inventors: Jae Yoon Park, Chang Yeol Jo, Dong Yeol Choi