Patents by Inventor Byung-Uk Roh

Byung-Uk Roh 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).

  • BOOM-SWIVEL COMPOUND DRIVE HYDRAULIC CONTROL SYSTEM OF CONSTRUCTION MACHINE
    Publication number: 20130291530
    Abstract: Disclosed is a hydraulic control system for matching the drive speed of a boom up and a swing device according to the operation environment when compound-driving for manipulating boom and swing for excavation compensating error operation.
    Type: Application
    Filed: December 27, 2010
    Publication date: November 7, 2013
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Sang-Ho Bang, Byung-Uk Roh