Patents by Inventor Jig Won Kang

Jig Won Kang 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).

  • Chair having an adjustable backrest for spinal protection
    Patent number: 8690249
    Abstract: The present invention relates to a chair having an adjustable backrest for spinal protection in that an inside of a backrest structure is provided with an auxiliary backrest for protecting a lumbar vertebrae, and a rack and pinion structure is employed in the backrest and the auxiliary backrest in such a manner that the backrest slides vertically and the auxiliary backrest also slides vertically by the same ratio such that the backrest and the auxiliary backrest can be adjusted appropriately and used flexibly to match the sitting height of the person sitting on the seat, thereby making it possible to provide effective protection to the spinal joints of the waist, back and neck of the user.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: April 8, 2014
    Inventors: Jig Won Kang, Kyong Ja Choi
  • CHAIR HAVING AN ADJUSTABLE BACKREST FOR SPINAL PROTECTION
    Publication number: 20120146376
    Abstract: The present invention relates to a chair having an adjustable backrest for spinal protection in that an inside of a backrest structure is provided with an auxiliary backrest for protecting a lumbar vertebrae, and a rack and pinion structure is employed in the backrest and the auxiliary backrest in such a manner that the backrest slides vertically and the auxiliary backrest also slides vertically by the same ratio such that the backrest and the auxiliary backrest can be adjusted appropriately and used flexibly to match the sitting height of the person sitting on the seat, thereby making it possible to provide effective protection to the spinal joints of the waist, back and neck of the user.
    Type: Application
    Filed: May 10, 2010
    Publication date: June 14, 2012
    Inventors: Jig Won Kang, Kyong Ja Choi