Patents by Inventor Yong Tack Lee

Yong Tack 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).

  • Patent number: 11986921
    Abstract: A chemical mechanical polishing method is provided. A chemical mechanical polishing method comprising providing a polishing pad, supplying a first purging compound having a first temperature onto the polishing pad, supplying a first slurry having a third temperature onto the polishing pad supplied with the first purging compound, supplying a second purging compound having a second temperature lower than the first temperature onto the polishing pad, and supplying a second slurry having a fourth temperature lower than the third temperature onto the polishing pad supplied with the second purging compound.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: May 21, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Myung-Ki Hong, Yong Hee Lee, Byoung Ho Kwon, Kun Tack Lee
  • Publication number: 20240154488
    Abstract: A cooling structure includes a housing having a cooling channel defined therein through which a coolant flows and includes a sealing cap fitted to a hole of the housing to seal the hole. The sealing cap includes a blocking member configured to be in contact with an internal surface of the housing. The cooling structure may be for cooling a motor, such as an in-wheel vehicle motor.
    Type: Application
    Filed: June 27, 2023
    Publication date: May 9, 2024
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Kam Chun Lee, Jae Young Jeun, Jeong Uk An, Ki Tack Lim, Kyung Jun Lee, Yong Gyu Lee, Sung Min Hong, Hong Wook Lee, Kyung Ku Yeo
  • Publication number: 20240154489
    Abstract: A channel structure includes a cooling channel continuously formed inside a housing. A coolant is configured to flow in the cooling channel. The cooling channel includes a plurality of channel portions spaced apart from each other and extending in the housing by changing directions.
    Type: Application
    Filed: June 30, 2023
    Publication date: May 9, 2024
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Kam Chun Lee, Jae Young Jeun, Jeong Uk An, Ki Tack Lim, Kyung Jun Lee, Yong Gyu Lee, Sung Min Hong, Hong Wook Lee, Kyung Ku Yeo
  • Publication number: 20240140191
    Abstract: The present disclosure provides a sealing device and an in-wheel motor including the sealing device. The in-wheel motor includes a stator, a rotor rotatably disposed with respect to the stator, an annular inner seal connected to the stator and spaced apart from the rotor by a predetermined gap so as to be disposed between the stator and the rotor, and an annular slinger coupled to an end portion of the rotor, wherein the annular inner seal seals between the slinger and the in-wheel motor.
    Type: Application
    Filed: May 1, 2023
    Publication date: May 2, 2024
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Ki Tack Lim, Jae Young Jeun, Jeong Uk An, Kyung Ku Yeo, Kam Chun Lee, Yong Gyu Lee, Sung Min Hong, Hong Wook Lee, Kyung Jun Lee
  • Patent number: 11925051
    Abstract: A display device includes: a first base having a display area; light-emitting elements on the first base; and an encapsulation layer over the light-emitting elements. The encapsulation layer includes: a first inorganic layer; an organic layer on the first inorganic layer; and a second inorganic layer on the organic layer. The first inorganic layer includes: a first buffer layer on the light-emitting elements; a first barrier layer on the first buffer layer; a first porous layer on the first barrier layer; a second barrier layer on the first porous layer; and a second buffer layer on the second barrier layer. A refractive index of the first buffer layer, the first barrier layer, and the first porous layer are different from one another, and the refractive index of the first porous layer is smaller than the refractive index of the first buffer layer and the first barrier layer.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: March 5, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong Tack Kim, Eung Seok Park, Jae Hyuk Lee, Yoon Hyeung Cho, Dong Uk Choi
  • Patent number: 8637669
    Abstract: The present invention relates to an improved method of preparing adefovir dipivoxil of Formula 1. The method of the present invention is characterized by using dimethylsulfoxide as a reaction solvent, and comprises a process of preparing adefovir dipivoxil of Formula 1 by allowing adefovir of Formula 2 to react with chloromethylpivalate at a reaction temperature of 30 to 50° C. under the presence of dimethylsulfoxide and triethylamine solvents.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: January 28, 2014
    Assignee: CJ Cheiljedang Corporation
    Inventors: Kwang Do Choi, Yong Tack Lee, Myeong Sik Yoon, Hye Suk Hong, Il Hwan Cho, Si Beum Lee, Seong Cheol Bang, Da Won Oh, Min Kyoung Lee
  • Publication number: 20110207930
    Abstract: The present invention relates to an improved method of preparing adefovir dipivoxil of Formula 1. The method of the present invention is characterized by using dimethylsulfoxide as a reaction solvent, and comprises a process of preparing adefovir dipivoxil of Formula 1 by allowing adefovir of Formula 2 to react with chloromethylpivalate at a reaction temperature of 30 to 50° C. under the presence of dimethylsulfoxide and triethylamine solvents.
    Type: Application
    Filed: September 17, 2009
    Publication date: August 25, 2011
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Kwang Do Choi, Yong Tack Lee, Myeong Sik Yoon, Hye Suk Hong, Il Hwan Cho, Si Beum Lee, Seong Cheol Bang, Da Won Oh, Min Kyoung Lee
  • Publication number: 20110207928
    Abstract: The present invention relates to a novel method of purifying adefovir dipivoxil of Formula 1. The purification method according to the present invention comprises the steps of dissolving impure adefovir dipivoxil containing byproducts generated during a synthetic reaction, salts thereof or complexes thereof in water or a water-containing mixed solvent; purifying the adefovir dipivoxil solution through a reverse-phase column; and adding a base to the purified adefovir dipivoxil solution and extracting the same with an organic solvent. Further, the present invention provides a method of preparing amorphous adefovir dipivoxil by removing the solvent from the high purity solution of adefovir dipivoxil represented by formula I purified by the above method.
    Type: Application
    Filed: September 10, 2009
    Publication date: August 25, 2011
    Applicant: CJ Cheiljedang Corporation
    Inventors: Il Hwan Cho, Myeong Sik Yoon, Kwang Do Choi, Yong Tack Lee, Si Beum Lee, Seong Cheol Bang, Min Kyoung Lee, Da Won Oh
  • Publication number: 20110201575
    Abstract: The present invention relates to an amorphous solid dispersion with improved stability comprising 9-[2-[[bis[(pivaloyloxy)methyl]phosphono]methoxy]ethyl]adenine as a nucleotide analogue, a pharmaceutical composition comprising the same, and a method for preparing the same.
    Type: Application
    Filed: September 16, 2009
    Publication date: August 18, 2011
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Yong Tack Lee, Myeong Sik Yoon, Hye Suk Hong, Il Hwan Cho, Tae Kun An, Si Beum Lee, Hae Jong Jang, Mi Kyung Park