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Kristian Harestad

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  • Randaberg, NO
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Patents Grantslast 30 patents

  • Information Patent Grant

    Valve device and method
    • Patent number 12,084,943
    • Issue date Sep 10, 2024
    • Petroleum Technology Company AS
    • Kristian Harestad
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Gas lift valve
    • Patent number 12,000,248
    • Issue date Jun 4, 2024
    • Petroleum Technology Company AS
    • Kristian Harestad
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Valve device and method
    • Patent number 11,454,086
    • Issue date Sep 27, 2022
    • Petroleum Technology Company AS
    • Kristian Harestad
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method of manufacturing a side pocket mandrel body
    • Patent number 11,230,893
    • Issue date Jan 25, 2022
    • Petroleum Technology Company AS
    • Ståle Pettersen
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method of manufacturing a side pocket mandrel body
    • Patent number 10,662,723
    • Issue date May 26, 2020
    • Petroleum Technology Company AS
    • Ståle Pettersen
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Wellhead port plug assembly
    • Patent number 10,450,821
    • Issue date Oct 22, 2019
    • Petroleum Technology Company AS
    • Lino Guedes
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Expandable device for forming a cement plug
    • Patent number 10,167,699
    • Issue date Jan 1, 2019
    • PERIGON AS
    • Kristian Harestad
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Valve arrangement and method of operating the same
    • Patent number 9,611,720
    • Issue date Apr 4, 2017
    • Petroleum Technology Company AS
    • Ole Sevheim
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Shear valve
    • Patent number 9,580,991
    • Issue date Feb 28, 2017
    • Petroleum Technology Company AS
    • Kristian Harestad
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Wave-inducing device, casing system and method for cementing a casi...
    • Patent number 9,157,294
    • Issue date Oct 13, 2015
    • Perigon Handel AS
    • Erling Kleppa
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Power lift generator
    • Patent number 8,136,601
    • Issue date Mar 20, 2012
    • Petroleum Technology Company
    • Magnar Tveiten
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Well barrier
    • Patent number 5,667,015
    • Issue date Sep 16, 1997
    • BJ Services Company
    • Kristian Harestad
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    VALVE DEVICE AND METHOD
    • Publication number 20230016342
    • Publication date Jan 19, 2023
    • PETROLEUM TECHNOLOGY COMPANY AS
    • Kristian HARESTAD
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    VALVE ARRANGEMENT
    • Publication number 20220170342
    • Publication date Jun 2, 2022
    • PETROLEUM TECHNOLOGY COMPANY AS
    • Kristian Harestad
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    GAS LIFT VALVE
    • Publication number 20220162928
    • Publication date May 26, 2022
    • PETROLEUM TECHNOLOGY COMPANY AS
    • Kristian HARESTAD
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    METHOD OF MANUFACTURING A SIDE POCKET MANDREL BODY
    • Publication number 20200284103
    • Publication date Sep 10, 2020
    • PETROLEUM TECHNOLOGY COMPANY AS
    • Ståle PETTERSEN
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    VALVE DEVICE AND METHOD
    • Publication number 20190284900
    • Publication date Sep 19, 2019
    • PETROLEUM TECHNOLOGY COMPANY AS
    • Kristian HARESTAD
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    EXPANDABLE DEVICE FOR FORMING A CEMENT PLUG
    • Publication number 20180030809
    • Publication date Feb 1, 2018
    • Perigon AS
    • Kristian Harestad
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    METHOD OF MANUFACTURING A SIDE POCKET MANDREL BODY
    • Publication number 20170241216
    • Publication date Aug 24, 2017
    • PETROLEUM TECHNOLOGY COMPANY AS
    • Ståle PETTERSEN
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    WELLHEAD PORT PLUG ASSEMBLY
    • Publication number 20170044861
    • Publication date Feb 16, 2017
    • PETROLEUM TECHNOLOGY COMPANY AS
    • Lino GUEDES
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Valve arrangement and method of operating the same
    • Publication number 20150330183
    • Publication date Nov 19, 2015
    • PETROLEUM TECHNOLOGY COMPANY AS
    • Ole Sevheim
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    WAVE-INDUCING DEVICE, CASING SYSTEM AND METHOD FOR CEMENTING A CASI...
    • Publication number 20140299320
    • Publication date Oct 9, 2014
    • PERIGON HANDEL AS
    • Erling Kleppa
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Shear valve
    • Publication number 20140130893
    • Publication date May 15, 2014
    • PETROLEUM TECHNOLOGY COMPANY AS
    • Kristian Harestad
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Power Lift Generator
    • Publication number 20100059222
    • Publication date Mar 11, 2010
    • PETROLEUM TECHNOLOGY COMPANY AS
    • Magnar Tveiten
    • E21 - EARTH DRILLING MINING