Patents by Inventor Jung-Song CHOI

Jung-Song 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).

  • Method of manufacturing filter pipe for vehicle and filter pipe for vehicle
    Patent number: 9827519
    Abstract: A method of manufacturing a filter pipe for vehicles which has an expanded tube portion with a different diameter at one side and is provided with a plurality of through holes formed along a circumferential direction includes: forming the plurality of through holes in a mother member; forming furrows at one end portion of the mother member; forming a planar member having the plurality of through holes and the furrows by a shearing process of the mother member; bending the planar member in a tubular shape and spreading the furrows to form an area where the furrows are formed in an expanded tube shape; and adhering both facing end portions of the planar member so as to form a body having the expanded tube portion at one side thereof.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: November 28, 2017
    Assignee: WOOSHIN INDUSTRIAL CO., LTD.
    Inventors: Jung-Song Choi, Yong-Soo Jang, Jung-Hwan Kim
  • METHOD OF MANUFACTURING FILTER PIPE FOR VEHICLE AND FILTER PIPE FOR VEHICLE
    Publication number: 20160089623
    Abstract: A method of manufacturing a filter pipe for vehicles which has an expanded tube portion with a different diameter at one side and is provided with a plurality of through holes formed along a circumferential direction includes: forming the plurality of through holes in a mother member; forming furrows at one end portion of the mother member; forming a planar member having the plurality of through holes and the furrows by a shearing process of the mother member; bending the planar member in a tubular shape and spreading the furrows to form an area where the furrows are formed in an expanded tube shape; and adhering both facing end portions of the planar member so as to form a body having the expanded tube portion at one side thereof.
    Type: Application
    Filed: September 29, 2015
    Publication date: March 31, 2016
    Applicant: WOOSHIN INDUSTRIAL CO., LTD.
    Inventors: Jung-Song CHOI, Yong-Soo JANG, Jung-Hwan KIM