Patents by Inventor Sun-Jai Lee

Sun-Jai 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: 20240099886
    Abstract: The present invention provides a lens capsule incision device capable of applying differential power for lens capsule incision to a lens capsule incising part according to the contact states of electrodes of the lens capsule incising part with the lens capsule. The lens capsule incision device, which has a lens capsule incising part adapted to incise the lens capsule and having electrodes, includes: a measuring part for measuring an impedance in a state in which the electrodes of the lens capsule incising part come into contact with the lens capsule; a state determining part for determining a current contact state of the electrodes with the lens capsule, based on the impedance measured through the measuring part; and a power application part for applying differential power for lens capsule incision to the lens capsule incising part according to the current contact state determined by the state determining part.
    Type: Application
    Filed: December 7, 2023
    Publication date: March 28, 2024
    Inventors: Hong Jai LEE, Sun Joon HWANG
  • Patent number: 11925581
    Abstract: A capsulorhexis device is inserted into an incision site of a cornea to make an incision in an anterior capsule surrounding a crystalline lens. The capsulorhexis device includes a loop having elasticity and conductivity; a moving member having one end fixed and coupled to the loop; an insertion guide configured so that, while the incision is being made in the crystalline lens capsule, a front end thereof is inserted into the incision site of the cornea; and a housing having one end coupled to a rear end of the insertion guide, wherein the loop is housed in the housing and, to make the incision in the crystalline lens capsule, slides in the housing together with the moving member to pass through the insertion guide and be deployed into an anterior chamber of the eye.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: March 12, 2024
    Assignee: TI INC.
    Inventors: Hong Jai Lee, Sung Hyuk Moon, Jae Wook Yang, Seung Jai Lee, Sun Joon Hwang, Hyun Jeong Kang
  • Patent number: 8100997
    Abstract: The present invention relates to a diamond tool and a method of manufacturing the same, wherein multiple abrasive layers are formed through a brazing or electroplating method, thereby improving the performance and service life of the tool. According to the method of the present invention, a plurality of concave portions are formed in a surface of the shank. A bonding paste is coated into the concave portions and abrasives are dispersed in the bonding paste to thereby form a lower abrasive layer. Again, a bonding material is coated on the lower abrasive layer and abrasives are dispersed in the bonding material to thereby form an upper abrasive layer. Then, a heat treatment is executed to fusion-bond the bonding material and abrasives onto the surface of the shank.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: January 24, 2012
    Assignee: Shinhan Diamond Industrial Co., Ltd.
    Inventors: Min-Seok Song, Mun-Seok Park, Sug-Goo Kim, Sun-Jai Lee, Kang-Jun Kim, Kee-Jeong Cheong, Won-Ho Jee, Shin-Kyung Kim
  • Publication number: 20070151554
    Abstract: The present invention relates to a diamond tool and a method of manufacturing the same, wherein multiple abrasive layers are formed through a brazing or electroplating method, thereby improving the performance and service life of the tool. According to the method of the present invention, a plurality of concave portions are formed in a surface of the shank. A bonding paste is coated into the concave portions and abrasives are dispersed in the bonding paste to thereby form a lower abrasive layer. Again, a bonding material is coated on the lower abrasive layer and abrasives are dispersed in the bonding material to thereby form an upper abrasive layer. Then, a heat treatment is executed to fusion-bond the bonding material and abrasives onto the surface of the shank.
    Type: Application
    Filed: February 4, 2005
    Publication date: July 5, 2007
    Applicant: SHINHAN DIAMOND INDUSTRIAL CO., LTD.
    Inventors: Min-Seok Song, Mun-Seok Park, Sug-Goo Kim, Sun-Jai Lee, Kang-Jun Kim, Kee-Jeong Cheong, Won-Ho Jee, Shin-Kyung Kim