Patents by Inventor Dong Sok Choi

Dong Sok Choi 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).

  • Display device having multiple insulating layers of same material
    Patent number: 11961849
    Abstract: A display device includes a base layer; a first pattern disposed on the base layer; an insulating layer disposed on the first pattern and including layers; and a second pattern disposed on the insulating layer. At least two of the layers of the insulating layer include a same material.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: April 16, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Keum Hee Lee, Dong Hoon Shin, June Whan Choi, Seung Sok Son, Woo Geun Lee
  • Therapeutic warming bag, an apparatus for its manufacture, and method for manufacturing a needle punched fabric of the bag
    Patent number: 4988053
    Abstract: A therapeutic warmer composed of a non-ventilative envelope and a film-coated bag disposed within the envelope wherein the film-coated bag includes a plurality of needle apertures disposed therein and further includes an exothermic composition and a mugwart powder whereby when the envelope is broken, and the contents are kneaded, heat is generated for warming the bag to use in warming and treating regions of the human body; a punching apparatus for adjustably forming the needle apertures so as to correspond with demand of the user; and also a method for manufacturing a punched fabric of the warming bag.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: January 29, 1991
    Inventor: Dong Sok Choi