Patents Assigned to Rays 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
  • Patent number: 5274020
    Abstract: Far infra-red ray radiating materials in which organic metal compounds or organic silicon compounds are used as radiating materials are disclosed. Examples of organic metal compounds which may be used in this invention are alkyl metal ester, alkyl metal chelate, alkyl metal acylate, metal chelated ester, metal alcoholate, and zirconium tetraacetylacetonate. Examples of organic silicon compounds which may be used in this invention are dimethyl dispoxy silan, and methyl triethoxy silan. The far infra-red radiating material manufactured by using the above compounds make it possible to express transparent color and have increased surface brightness, adhesive strength, and heat resistance, without lowering its standard of radiation rate in comparison with known radiating materials manufactured by using inorganic compounds.
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: December 28, 1993
    Assignee: Samwoo Far Infra-Red Ray Co., Ltd.
    Inventor: Young Joon Kweon
  • Patent number: 5187124
    Abstract: A disinfectant bio-ceramic material which can be easily manufactured, has a stable disinfectant property, catches heavy metals which are harmful to human body, and radiates far infra-red rays with a positive influence on living things.Examples of the base materials used are compounds containing alkaline earth metal and phosphorus such as granulated bone, keel (fossils of vertebrate animals), artificial spatite, phosphate calcium ore, TCP (tricalcium phosphate),Mg3 (PO.sub.4).sub.2.5H.sub.2 O MgO.3SiO.sub.2.xH.sub.2 O and Sr(C.sub.3 H.sub.5 OH).sub.2.3H.sub.2 O in which compounds containing calcium and phosphorus are most preferable. With these base materials, by reacting metals with disinfectant and harmless property such as silver, copper, or zinc, a disinfectant bio-ceramic material is obtained.
    Type: Grant
    Filed: October 2, 1991
    Date of Patent: February 16, 1993
    Assignee: Samwoo Far Infra-Red Ray Co., Ltd.
    Inventor: Young J. Kweon
  • Patent number: D519435
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: April 25, 2006
    Assignee: Rays Co., Ltd.
    Inventor: Akizumi Nodera