Patents by Inventor Hwa-Yeol Lee

Hwa-Yeol Lee 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).

  • Apparatus for semi-automatically opening/closing door of construction equipment
    Patent number: 9435103
    Abstract: Disclosed is an apparatus for opening/closing a door in which the door can be semi-automatically closed in a preset section so as to enable an operator in an operating cab to easily close the door.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: September 6, 2016
    Assignee: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventor: Hwa-Yeol Lee
  • APPARATUS FOR SEMI-AUTOMATICALLY OPENING/CLOSING DOOR OF CONSTRUCTION EQUIPMENT
    Publication number: 20150121655
    Abstract: Disclosed is an apparatus for opening/closing a door in which the door can be semi-automatically closed in a preset section so as to enable an operator in an operating cab to easily close the door.
    Type: Application
    Filed: May 3, 2012
    Publication date: May 7, 2015
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventor: Hwa-Yeol Lee