Patents by Inventor Alf S. Martinsen

Alf S. Martinsen 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).

  • Process and an integrated plant for the production of synfuel and electrical power
    Patent number: 6180684
    Abstract: The present invention relates to a process and an integrated plant to be used in the process for the preparation of synthetic fuel (synfuel) and production of electrical energy. A part of the energy produced is used for the operation of the energy requiring steps of the process, whereas the residual part is exported for other purposes. The warm exhaust gas from the part of the plant producing electrical energy is fed to a preheating step for natural gas being used as a starting material for the preparation of synfuel.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: January 30, 2001
    Assignee: Den Norske Stats Oljeselskap A.S.
    Inventors: Terje M. Halmo, Alf S. Martinsen, Roger Hansen, Dag Schanke