Patents by Inventor Harri Sjöholm

Harri Sjöholm 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).

  • METHOD FOR SURVEYING DRILL HOLES, DRILLING ARRANGEMENT, AND BOREHOLE SURVEY ASSEMBLY
    Publication number: 20150240632
    Abstract: A method is disclosed for surveying drill holes with a drilling arrangement and borehole survey assembly. The method can include providing a drill tool having at least one drill rod and a drill bit assembly, and providing a borehole survey tool having a sensor) for measuring a borehole. In the method a drill tool having a central flushing channel for conducting flushing fluid to the drill bit assembly is used, and the borehole survey tool is arranged in the central flushing channel so that flushing fluid can flow in the central flushing channel past the borehole survey tool.
    Type: Application
    Filed: September 5, 2013
    Publication date: August 27, 2015
    Applicant: ROBIT ROCKTOOLS LTD.
    Inventors: Mikko Heinonen, Harri Sjöholm, Jussi Rautiainen, Mikko Mattila