Patents by Inventor Ragne Hildrum

Ragne Hildrum 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).

  • Publication number: 20090285747
    Abstract: This invention relates to a method for producing micro-domain graphitic materials by use of a plasma process, and to novel micro-conical graphitic materials. By micro-domain graphitic material we mean fullerenes, carbon nanotubes, open conical carbon structures (also named micro-cones), preferably flat graphitic sheets, or a mixture of two or all of these. The novel carbon material is open carbon micro-cones with total disclination degrees of 60° and/or 120°, corresponding to cone angles of respectively 112.9° and/or 83.6°.
    Type: Application
    Filed: November 7, 2008
    Publication date: November 19, 2009
    Inventors: Steinar Lynum, Jan Hugdahl, Ketil Hox, Ragne Hildrum, Magne Nordvik
  • Patent number: 7462343
    Abstract: This invention relates to a method for producing micro-domain graphitic materials by use of a plasma process, and to novel micro-conical graphitic materials. By micro-domain graphitic material we mean fullerenes, carbon nanotubes, open conical carbon structures (also named micro-cones), preferably flat graphitic sheets, or a mixture of two or all of these. The novel carbon material is open carbon micro-cones with total disclination degrees of 60° and/or 120°, corresponding to cone angles of respectively 112.9° and/or 83.6°.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: December 9, 2008
    Assignee: Kvafrner Technology and Research Ltd.
    Inventors: Steinar Lynum, Jan Hugdahl, Ketil Hox, Ragne Hildrum, Magne Nordvik
  • Patent number: 6773689
    Abstract: This invention relates to a carbon media for storage of hydrogen characterized in that it comprises known and novel micro-domain materials and that it is produced by a one or two-step plasma process. In the one-step plasma process conventional carbon black or graphitic carbon black can be formed. In the two-step plasma process, a hydrocarbon feed material is sent through a plasma zone and becomes partly dehydrogenated in the first step to form polycyclic aromatic hydrocarbons (PAHs), and is then sent through second plasma zone to become completely dehydrogenated to form micro-domain graphitic materials in the second step. By micro-domain graphitic materials we mean fullerenes, carbon nanotubes, open conical carbon structures (also named micro-cones), flat graphitic sheets, or a mixture of two or all of these. The novel carbon material is open carbon micro-cones with total disclination degrees 60° and/or 120°, corresponding to cone angles of respectively 112.9° and/or 83.6°.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: August 10, 2004
    Assignee: Kvaerner Technology Research Ltd.
    Inventors: Steinar Lynum, Jan Hugdahl, Ketil Hox, Ragne Hildrum
  • Publication number: 20030091495
    Abstract: This invention relates to a method for producing micro-domain graphitic materials by use of a plasma process, and to novel micro-conical graphitic materials. By micro-domain graphitic material we mean fullerenes, carbon nanotubes, open conical carbon structures (also named micro-cones), preferably flat graphitic sheets, or a mixture of two or all of these. The novel carbon material is open carbon micro-cones with total disclination degrees of 60° and/or 120°, corresponding to cone angles of respectively 112.9° and/or 83.6°.
    Type: Application
    Filed: October 22, 2002
    Publication date: May 15, 2003
    Inventors: Steinar Lynum, Jan Hugdahl, Ketil Hox, Ragne Hildrum, Magne Nordvik