Patents by Inventor Hirotusgu Kurokawa

Hirotusgu Kurokawa 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).

  • Process for welding fixture pipes to opposite ends of hollow stabilizer's suspension arm for vehicle
    Patent number: 6365865
    Abstract: A welding process in which fixture pipes 3 are resistance welded to opposite ends of a hollow stabilizer's suspension arm 1 for a vehicle and thereafter, these two parts are subjected to arc welding, but with a first step of the ends of the hollow stabilizer's suspension arm upset to form thick wall portions before resistance welding and arc welding are performed. The initial resistance welding retains the two parts in place for the arc welding step.
    Type: Grant
    Filed: June 3, 1999
    Date of Patent: April 2, 2002
    Assignee: Chuohatsujo Kabushiki Kaisha
    Inventor: Hirotusgu Kurokawa