Patents Assigned to Ray Co., Ltd.
  • Patent number: 11020071
    Abstract: An X-ray computed tomography apparatus with a scanner function includes a vertical frame, a patient support arm provided below the vertical frame, a horizontal support arm extending horizontally from a top portion of the vertical frame, a rotary arm drive unit provided at an end of the horizontal support arm, a horizontal rotation arm provided horizontally below the rotary arm drive unit to rotate 360 degrees, a general CT imaging X-ray source provided at one end of the horizontal rotation arm, and an X-ray detector provided at the other end of the horizontal rotation arm to face the general CT imaging X-ray source. A micro CT imaging X-ray source is provided on the vertical frame, a rotary table for seating and rotating an object to be imaged is provided above the patient support arm, and the X-ray detector is composed of a common X-ray detector.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: June 1, 2021
    Assignee: Ray Co., Ltd.
    Inventors: Yong Jae Sa, Sang Chul Lee
  • Patent number: 8157564
    Abstract: The present invention discloses a manufacturing method and apparatus of artificial human teeth using dental CT. The method comprises the steps of: removing a damaged part of human teeth; obtaining surface coordinates of the teeth using a dental CT machine located at a dental clinic for a medical checkup; converting the surface coordinates of the actual teeth to CAD/CAM data; manufacturing artificial teeth by cutting metal or ceramic with a three-dimensional N/C machine using the converted data; obtaining shape data of upper or lower actual teeth corresponding to the artificial teeth; changing the shape of the artificial teeth by direct surface processing according to the shape data of the upper or lower teeth; and coating ceramic to the artificial teeth after sintering the processed artificial teeth for a predetermined period.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: April 17, 2012
    Assignee: Ray Co., Ltd.
    Inventors: Sang Chul Lee, Chang Hwan Byun, Tae Seok Park
  • Patent number: 8005186
    Abstract: A dental complex imaging system includes a base and chair on the base for allowing a patient sit; a base-mounted pole adjacent to the chair; a support part extending toward the patient; an expanding and contracting part pivotally coupled to the support part; a radiation generator that moves with the part for emitting radiation for an imaging mode selected from cephalography, panoramic radiography, and CT scanning; a detector disposed on the other side of the part and opposed to the generator; and a controller for reading imaging information, wherein the generator is disposed to slide to adjust a distance between itself and the detector according to the imaging mode while the patient sits on the chair.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: August 23, 2011
    Assignee: Ray Co., Ltd.
    Inventor: Sang Chul Lee
  • Publication number: 20100055647
    Abstract: The present invention discloses a manufacturing method and apparatus of artificial human teeth using dental CT. The method comprises the steps of: removing a damaged part of human teeth; obtaining surface coordinates of the teeth using a dental CT machine located at a dental clinic for a medical checkup; converting the surface coordinates of the actual teeth to CAD/CAM data; manufacturing artificial teeth by cutting metal or ceramic with a three-dimensional N/C machine using the converted data; obtaining shape data of upper or lower actual teeth corresponding to the artificial teeth; changing the shape of the artificial teeth by direct surface processing according to the shape data of the upper or lower teeth; and coating ceramic to the artificial teeth after sintering the processed artificial teeth for a predetermined period.
    Type: Application
    Filed: August 29, 2007
    Publication date: March 4, 2010
    Applicant: RAY CO., LTD.
    Inventors: Sang Chul Lee, Chang Hwan Byun, Tae Seok Park
  • Publication number: 20090245461
    Abstract: Disclosed therein is a dental complex imaging system including: a base seated on the ground; a chair part disposed on the upper portion of the base for allowing a patient to wait for imaging with him/her seated thereon; a pole mounted on the base so as to be adjacent to the chair part; a support part adapted to extend toward the patient from the top of the pole; an expanding and contracting part pivotally coupled to the underside of the support part so as to be expanded and contracted; a radiation generator part disposed below one side of the expanding and contracting part and moving according to expansion and contraction of the expanding and contracting part for emitting radiation selected according to CT imaging, cephalography and panoramic radiography; a radiation detecting part disposed on the other side of the expanding and contracting part in such a way as to be opposed to the radiation generator part for detecting radiation selectively emitted from the radiation generator part according to the CT imagi
    Type: Application
    Filed: September 21, 2007
    Publication date: October 1, 2009
    Applicant: RAY CO., LTD.
    Inventor: Sang Chul Lee