Patents by Inventor Jichul Choi

Jichul 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).

  • Alloy for seal ring, seal ring, and method of making seal ring for seal assembly of machine
    Patent number: 11104978
    Abstract: A seal ring for a seal assembly includes a body and a seal flange. The body is generally cylindrical and extends along a longitudinal axis between a load end and a seal end. The seal flange is disposed at the seal end of the cylindrical body. The seal flange circumscribes the body and projects radially from the body to a distal perimeter of the seal flange. The seal flange includes a sealing face which is annular and disposed adjacent the distal perimeter. The seal ring is made from an alloy that includes between 6 percent and 9 percent by weight of iron, between 1.5 percent and 3 percent by weight of silicon, greater than 14 percent by weight of chromium, and at least 65 percent by weight of nickel.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: August 31, 2021
    Assignee: Caterpillar Inc.
    Inventors: Li Zhang, Thomas Yaniak, Jichul Choi, Yeonbok Muk, Gilsung Kim
  • Alloy for Seal Ring, Seal Ring, and Method of Making Seal Ring for Seal Assembly of Machine
    Publication number: 20200190631
    Abstract: A seal ring for a seal assembly includes a body and a seal flange. The body is generally cylindrical and extends along a longitudinal axis between a load end and a seal end. The seal flange is disposed at the seal end of the cylindrical body. The seal flange circumscribes the body and projects radially from the body to a distal perimeter of the seal flange. The seal flange includes a sealing face which is annular and disposed adjacent the distal perimeter. The seal ring is made from an alloy that includes between 6 percent and 9 percent by weight of iron, between 1.5 percent and 3 percent by weight of silicon, greater than 14 percent by weight of chromium, and at least 65 percent by weight of nickel.
    Type: Application
    Filed: December 14, 2018
    Publication date: June 18, 2020
    Applicant: Caterpillar Inc.
    Inventors: Li Zhang, Thomas Yaniak, Jichul Choi, Yeonbok Muk, Gilsung Kim