Patents by Inventor Hong-Ki Lee

Hong-Ki Lee 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: 20140303058
    Abstract: The present invention relates to a vehicle-glass cleaning fluid composition comprising an alcohol, an anionic surfactant, and tartaric acid as a corrosion inhibitor. The present invention provides a cleaning fluid composition entailing improved metal corrosion prevention, durability for rubbers and plastics, and performance in preventing the noise and wear which occur when there is friction between a wiper blade and glass surface. The cleaning fluid composition of the present invention has outstanding corrosion-preventing properties while also substantially improving test-piece weight-change reduction and abnormal appearance changes, and has a highly outstanding performance in preventing noise and wear due to friction.
    Type: Application
    Filed: January 31, 2012
    Publication date: October 9, 2014
    Applicant: KUKDONG JEYEN COMPANY LIMITED
    Inventors: Jae Yoon Park, Chang Yeol Jo, Hong Ki Lee
  • Publication number: 20140274833
    Abstract: The present invention relates to a brake fluid composition comprising a glycol compound as a solvent, and triazole, thiadiazole mixture, and antioxidant as metallic corrosion inhibitors. Provided is a brake fluid composition having improved long-term metallic and high-temperature corrosion inhibition. The brake fluid composition according to the present invention significantly improves long-term durability by being a superior anti-corrosive as well as having a reduced weight variation on a test piece, and has a superior high-temperature corrosion inhibition while having negligible effects on the equilibrium reflux boiling point and the wet equilibrium reflux boiling point.
    Type: Application
    Filed: January 31, 2012
    Publication date: September 18, 2014
    Applicant: KUKDONG JEYEN COMPANY LIMITED
    Inventors: Jae Yoon Park, Chang Yeol Jo, Hong Ki Lee
  • Patent number: 8691110
    Abstract: A coolant composition for a fuel cell, including (a) an alkylene glycol, (b) deionized water, and (c) a compound containing a trimethylsilyl group. The compound containing a trimethylsilyl group of the composition of the present invention prevents the oxidation of the alkylene glycol, and thus the generation of an acid is 700 ppm or less. Additionally, the compound prevent the oxidation of the alkylene glycol, thereby inhibiting the generation of an ionic material, and thus the rate of change of electrical conductivity (conductivity after oxidation/initial conductivity) can be maintained to be 40 times or less. Therefore, the coolant composition for a fuel cell of the present invention can be used as a coolant for a cooling system of a fuel cell driving device with an electrical conductivity of 40 ?s/cm or less even without being frozen in the winter.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: April 8, 2014
    Assignee: Kukdong Jeyen Company Limited
    Inventors: Young Joo Ha, Chang Yeol Jo, Hong Ki Lee
  • Publication number: 20130092870
    Abstract: A coolant composition for a fuel cell, including (a) an alkylene glycol, (b) deionized water, and (c) a compound containing a trimethylsilyl group. The compound containing a trimethylsilyl group of the composition of the present invention prevents the oxidation of the alkylene glycol, and thus the generation of an acid is 700 ppm or less. Additionally, the compound prevent the oxidation of the alkylene glycol, thereby inhibiting the generation of an ionic material, and thus the rate of change of electrical conductivity (conductivity after oxidation/initial conductivity) can be maintained to be 40 times or less. Therefore, the coolant composition for a fuel cell of the present invention can be used as a coolant for a cooling system of a fuel cell driving device with an electrical conductivity of 40 ?s/cm or less even without being frozen in the winter.
    Type: Application
    Filed: June 8, 2011
    Publication date: April 18, 2013
    Applicant: KUKDONG JEYEN COMPANY LIMITED
    Inventors: Young Joo Ha, Chang Yeol Jo, Hong Ki Lee
  • Patent number: 7554085
    Abstract: The present disclosure is related to bolometric infrared sensors having a two-layer structure and methods for manufacturing the same for improving an absorption rate by a spectroscopic design for resonantly absorbing infrared, and preventing the deformation of a sensor caused by stresses due to heat. The infrared sensor including an ROIC substrate and several pixels, comprises: a bottom layer including a reflective metal layer on the ROIC substrate; a cavity for resonantly absorbing infrared ray over the bottom layer; an upper layer of a sandwich shape including an absorption-transmission layer having a cutting area in the middle thereof and a bolometer layer placed both on and under the absorption-transmission layer; and anchors positioned at the edges of the pixel for supporting the upper layer and functioning as electrodes.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: June 30, 2009
    Assignee: OCAS Corp.
    Inventor: Hong-Ki Lee
  • Publication number: 20070262256
    Abstract: The present disclosure is related to bolometric infrared sensors having a two-layer structure and methods for manufacturing the same for improving an absorption rate by a spectroscopic design for resonantly absorbing infrared, and preventing the deformation of a sensor caused by stresses due to heat. The infrared sensor including an ROIC substrate and several pixels, comprises: a bottom layer including a reflective metal layer on the ROIC substrate; a cavity for resonantly absorbing infrared ray over the bottom layer; an upper layer of a sandwich shape including an absorption-transmission layer having a cutting area in the middle thereof and a bolometer layer placed both on and under the absorption-transmission layer; and anchors positioned at the edges of the pixel for supporting the upper layer and functioning as electrodes.
    Type: Application
    Filed: September 9, 2004
    Publication date: November 15, 2007
    Applicant: Ocas Corp.
    Inventor: Hong-Ki Lee