Patents by Inventor Jyunichi Harada

Jyunichi Harada 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).

  • Spar-buoy boring derrick and mooring facility
    Patent number: 5044450
    Abstract: A spar-buoy type boring device including a main pipe and a central pipe installed in the main pipe. The main pipe, which has a service deck at the top and a float near the top so that the float stays underneath the water, is anchored at the bottom to a sinker which is placed on the seabed, and the central pipe with the bottom end opening in the sea is used for guiding boring equipments to the seabed and collecting samples from the seabed.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: September 3, 1991
    Assignee: Zeni Lite Buoy Co., Limited
    Inventors: Hiroshi Aso, Jyunichi Harada