Patents by Inventor Torbjorn Dahl

Torbjorn Dahl 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).

  • Tuning device and method of manufacturing the same
    Patent number: 6198366
    Abstract: A trimming arrangement in a device for tuning and/or adaptation of electromagnetic waves includes at least one trimming screw galvanically connected to the device and at least one bushing portion arranged for inserting and securing the screw. The bushing portion includes a substantially pervious opening arranged in a part of the device, a section arranged in the opening reception of the screw and a constriction arranged in an axial direction of the opening, which constriction is provided to firmly but detachably secure the screw.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: March 6, 2001
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Torbjörn Dahl, Sten-Åke Nilsson
  • Injection of powdered material into electrolysis cells
    Patent number: 5759382
    Abstract: In an electrolysis cell wherein powdered material are added to a bath of molten electrolyte, the anode is provided with a duct through which the powdered material may be fed to the electrolyte. Simultaneously, a gas which is preferably inert, is also fed together with the powdered material through the duct, and both are injected beneath the surface of the electrolyte.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: June 2, 1998
    Assignee: Canadian Liquid Air Ltd/Air Liquide Canada LTEE
    Inventors: Torstein Utigard, Alejandro Bustos, Torbjorn Dahl