Patents by Inventor Oystein Fischer

Oystein Fischer 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: 20090166329
    Abstract: The invention relates to a method and an installation for identifying an object. An identification mark (12) is made on the actual object using electrical discharges (28) between a metal tip (21), such as that of a local-probe microscope, and the substrate (22) formed by the object. The discharges (28) are produced through a composite dielectric medium (25) and produce an impression (23) which can be identified by read means, such as a microprobe, and has a particular physical nature and/or a particular chemical composition. Thanks to these characteristics, it is possible to obtain a very secure identification and authentication mark that can be applied directly to the actual object to be identified or authenticated.
    Type: Application
    Filed: July 10, 2007
    Publication date: July 2, 2009
    Applicant: L'UNIVERSITE DE GENEVE
    Inventors: Jorge Cors, Oystein Fischer, Olivier Kuffer, Jean-Marc Triscone, Michel Decroux
  • Patent number: 6819536
    Abstract: The invention is concerned with a resistive fault current limiter (FCL) based on thin superconducting films. The FCL comprises constrictions (2) with a reduced critical current, separated by connecting paths (3). Upon occurrence of a fault current, the former turn resistive simultaneously and build up a resistance which allows the applied voltage to drop entirely only over the constrictions. Only at a later stage, the connecting paths become resistive and dissipate energy. The thickness and width of an electrical bypass determine said normal resistivities of the constrictions and the connecting paths.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: November 16, 2004
    Assignee: ABB Research Ltd.
    Inventors: Makan Chen, Willi Paul, Michel Decroux, Louis Antognazza, Oystein Fischer
  • Publication number: 20040027738
    Abstract: The invention is concerned with a resistive fault current limiter (FCL) based on thin superconducting films. The FCL comprises constrictions (2) with a reduced critical current, separated by connecting paths (3). Upon occurrence of a fault current, the former turn resistive simultaneously and build up a resistance which allows the applied voltage to drop entirely only over the constrictions. Only at a later stage, the connecting paths become resistive and dissipate energy. The thickness and width of an electrical bypass determine said normal resistivities of the constrictions and the connecting paths.
    Type: Application
    Filed: July 15, 2003
    Publication date: February 12, 2004
    Applicant: ABB Research Ltd.
    Inventors: Maken Chen, Willi Paul, Michel Decroux, Louis Antognazza, Oystein Fischer
  • Patent number: 6677629
    Abstract: The invention concerns a component of composite structure (10) consisting of a layer of ferroelectric material (11) and at least a thin film of semiconductor material or of a thin metal or supraconducting film (12) in close contact with the layer of ferroelectric material (11). It further comprises means for generating local modifications of the ferroelectric material polarization. This mechanism includes a device for applying a voltage between at least one punctiform electrode (13) arranged for selectively scanning the composite structure (10) surface facing that consisting of the semiconductor or thin metal or supraconducting film (12), and the semiconductor or thin metal or supraconducting film.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: January 13, 2004
    Assignee: Universite de Geneve
    Inventors: Oystein Fischer, Jean-Marc Triscone, Charles H. Ahn, Malcom R. Beasley, Christophe Renner, Thomas Tybell
  • Patent number: 5314714
    Abstract: Process for increasing the density and improving the homogeneity of Chevrel phase powders and Chevrel phase wire obtained using said process. Chevrel phase powers are compounds of lead, mobydenum, and sulfur. Metallic additives in the range of 0.5% to 20% by weight are introduced in the Chevrel phase powders by a physical or chemical process. The melting temperature of the metallic additives is lower than the synthesis temperature of the Chevrel phase powders so as to increase the homogeneity. The wires obtained using this process are capable of generating high magnetic fields.
    Type: Grant
    Filed: September 3, 1990
    Date of Patent: May 24, 1994
    Assignee: Promogap
    Inventors: Bernd Seeber, Oystein Fischer, Michel Decroux