Patents by Inventor Ho Sik Byun

Ho Sik Byun 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: 12072553
    Abstract: An optical imaging system includes a first lens having positive refractive power, a second lens, a third lens, a fourth lens, and a fifth lens, arranged in order from an object side. The first lens is shaped such that a length of a first axis, which intersects an optical axis, is greater than a length of a second axis, which intersects the optical axis and is perpendicular to the first axis. The optical imaging system satisfies 4.5<TTL/IMG HT<6.5; 0.87<TTL/f<1.31; and 0.65<L1S1es/L1S1el<0.9.
    Type: Grant
    Filed: April 19, 2023
    Date of Patent: August 27, 2024
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Joon Hee Byun, Ho Sik Yoo, Yong Joo Jo
  • Patent number: 6752452
    Abstract: A collapsible reclining chair (10, 100, 200), has a frame assembly (16) which includes angled frame members (32), the upper ends (37) of the angled frame members (32) being pivotally attached to upper connectors (136,138), and the lower ends (36) being pivotally attached to feet (30). The frame assembly (16) as a whole expands outwardly from a central area (8). The frame assembly (16) also includes upright members (34), and a support surface (18), having a back portion (15). The lower ends (38) of each of the upright members (34) are attached to one of the angled members (32) by a reversible joint (39), so that the reclining chair (10, 100, 200) is movable from an upright position (12) when the reversible joints (39) are in a first position, to a reclining position (14) when the reversible joints (39) have been reversed to a second position.
    Type: Grant
    Filed: September 29, 2001
    Date of Patent: June 22, 2004
    Assignee: NorthPole Ltd
    Inventors: Sang B. Choi, Ho Sik Byun
  • Publication number: 20020043822
    Abstract: A collapsible reclining chair (10, 100, 200), having a frame assembly (16) which includes a angled frame members (32), the upper ends (37) of the angled frame members (32) being pivotally attached to upper connectors (136,138), and the lower ends (36) being pivotally attached to feet (30). The frame assembly (16) as a whole expands outwardly from a central area (8). The frame assembly (16) also includes upright members (34), and a support surface (18), having a back portion (15). The lower ends (38) of each of the upright members (34) are attached to one of the angled members (32) by a reversible joint (39), so that the reclining chair (10, 100, 200) is movable from an upright position (12) when the reversible joints (39) are in a first position, to a reclining position (14) when the reversible joints (39) have been reversed to a second position.
    Type: Application
    Filed: September 29, 2001
    Publication date: April 18, 2002
    Inventors: Sang B. Choi, Ho Sik Byun
  • Publication number: 20020014791
    Abstract: A reclining chair (10), having a frame (16) including first and second angled members (32) and first and second upright members (34). A support surface (18) has a back portion (15) which is held in position by the first and second upright members (34). Each of the first and second upright members (34) is attached to one of first and second angled members (32) by reversible joints (39), so that the reclining chair (10) is movable from an upright position (12) when the reversible joints (39) are in a first position, to a reclining position (14) when the reversible joints (39) have been reversed to a second position.
    Type: Application
    Filed: February 23, 2001
    Publication date: February 7, 2002
    Inventors: Sang Byong Choi, Ho Sik Byun
  • Patent number: D639124
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: June 7, 2011
    Assignee: NorthPole (US), LLC
    Inventor: Ho Sik Byun