Patents by Inventor Haakon Jostein Grimstad

Haakon Jostein Grimstad 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).

  • Subsea module pressure control
    Patent number: 10344919
    Abstract: A method of controlling fluid pressure in a closed system including using a pressure regulating unit connected to the system, the unit including a first conduit fluidly connecting the closed system to an external system. A first regulating valve is interposed between the external system and one end of the conduit and a second regulating valve interposed between the closed system and the other end of the conduit. The method further includes: a) opening one of the first or second regulating valves; b) closing said one regulating valve; c) opening the other regulating valve; d) closing the other regulating valve; and e) repeating steps a) to d) in turn until the desired fluid pressure is achieved in the system.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: July 9, 2019
    Assignee: OneSubsea IP UK Limited
    Inventors: Haakon Jostein Grimstad, Arne Veland
  • High temperature subsea dynamic seals
    Patent number: 10253886
    Abstract: Systems and methods are described for processing a high-temperature process fluid using a processing machine in a subsea location while protecting dynamic seals within the machine. In some examples a small portion of the process fluid is cooled using a cooling system the cooled process fluid is then directed towards the dynamic seals. In other examples the dynamic seals are shielded and isolated from the high temperature process fluid and cooler barrier fluid is circulated within an enclosed volume in proximity to the seal.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: April 9, 2019
    Assignee: Framo Engineering AS
    Inventors: Robert Groette, Anders Brunvold, Per Gunnar Vikre, Haakon Jostein Grimstad
  • HIGH TEMPERATURE SUBSEA DYNAMIC SEALS
    Publication number: 20150377358
    Abstract: Systems and methods are described for processing a high-temperature process fluid using a processing machine in a subsea location while protecting dynamic seals within the machine. In some examples a small portion of the process fluid is cooled using a cooling system the cooled process fluid is then directed towards the dynamic seals. In other examples the dynamic seals are shielded and isolated from the high temperature process fluid and cooler barrier fluid is circulated within an enclosed volume in proximity to the seal.
    Type: Application
    Filed: February 12, 2014
    Publication date: December 31, 2015
    Applicant: FRAMO ENGINEERING AS
    Inventors: Robert GROETTE, Anders BRUNVOLD, Per Gunnar VIKRE, Haakon Jostein GRIMSTAD
  • SUBSEA MODULE PRESSURE CONTROL
    Publication number: 20140290753
    Abstract: A method of controlling fluid pressure in a closed system including using a pressure regulating unit connected to the system, the unit including a first conduit fluidly connecting the closed system to an external system. A first regulating valve is interposed between the external system and one end of the conduit and a second regulating valve interposed between the closed system and the other end of the conduit. The method further includes: a) opening one of the first or second regulating valves; b) closing said one regulating valve; c) opening the other regulating valve; d) closing the other regulating valve; and e) repeating steps a) to d) in turn until the desired fluid pressure is achieved in the system.
    Type: Application
    Filed: August 16, 2012
    Publication date: October 2, 2014
    Applicant: FRAMO ENGINEERING AS
    Inventors: Haakon Jostein Grimstad, Arne Veland