Patents by Inventor Cheong-jin Jang

Cheong-jin Jang 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).

  • Pickup roller and image forming apparatus having the same
    Patent number: 8858412
    Abstract: A pickup roller includes a supporting layer and a pickup layer, which includes a base surrounding the outer perimeter of the supporting layer and a plurality of particles which are distributed throughout the base and have a different hardness than a hardness of the base.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: October 14, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-hyeuk Jeong, Cheong-jin Jang, Min-chan Kim, Ae-kyung Choi
  • PICKUP ROLLER AND IMAGE FORMING APPARATUS HAVING THE SAME
    Publication number: 20110158726
    Abstract: A pickup roller includes a supporting layer and a pickup layer, which includes a base surrounding the outer perimeter of the supporting layer and a plurality of particles which are distributed throughout the base and have a different hardness than a hardness of the base.
    Type: Application
    Filed: June 30, 2010
    Publication date: June 30, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jae-hyeuk JEONG, Cheong-jin Jang, Min-chan Kim, Ae-kyung Choi