Patents Assigned to Quantum Jewelry (Hong Kong) Limited
  • Patent number: 10646009
    Abstract: A ring and method of manufacturing a ring which may include: an outer ring, in which a second carbide composed of a combination of tungsten carbide, iron group carbide or carbonitride is mixed with a metal binder phase at a predetermined ratio, in which the outer ring is divided into a first outer ring and a second outer ring formed in a shape corresponding to each other; an inner ring separately and/or independently assembled between the first and second outer rings, in which the inner ring includes an outside inner ring that forms an outer circumferential surface of the ring and an inside inner ring that forms an inner circumferential surface of the ring; ring fitting parts formed on the first and second outer rings, respectively, such that both sides of the outer and inside inner rings are press-fit; and assembling protrusions formed on the first and second outer rings, respectively, to be inserted into the outer circumferential surface of the inside inner ring to maintain a firm assembly between the outer
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: May 12, 2020
    Assignee: Quantum Jewelry (Hong Kong) Limited
    Inventors: Jeong-su Song, Nun-Choi Jun