Patents by Inventor Juhani Ninivaara

Juhani Ninivaara 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).

  • System for controlling and stopping oil drilling fires
    Patent number: 6125928
    Abstract: System for controlling oil well fires by blocking the production or drilling pipes. A box incorporating a movable piston is fitted around the pipe. The piston carries, on its forward end, a drilling cylinder (3), which can be brought to the pipe by a hydraulic piston-cylinder arrangement. Subsequently, the drilling cylinder drills through the pipe wall and after that the drilling cylinder or a separate plugging cylinder (4) is left in the drilled hole and blocks the fluid flow through the pipe. The process is remote controlled.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: October 3, 2000
    Assignee: AB Grundstenen AB (Metal Patent WHSS AB)
    Inventors: Tarmo Ninivaara, Tero Hurtta, Juhani Ninivaara