Patents by Inventor Angelo Oscar Peter De Klerk

Angelo Oscar Peter De Klerk 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).

  • Lithographic apparatus and motor for use in the apparatus
    Patent number: 6717296
    Abstract: A Lorentz actuator provides a force between a first part and a second part of the apparatus, comprising a main magnet system, attached to a first part of the apparatus and providing a first magnetic field; a subsidiary magnet system, attached to the first part and arranged in a Halbach configuration, providing a second magnetic field; and an electrically conductive element attached to a second part of the apparatus and arranged so as to produce a force between the first and second parts of the apparatus by interaction of an electric current carried by the electrically conductive element and the combination of the first and second magnetic fields.
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: April 6, 2004
    Assignee: ASML Netherlands B.V.
    Inventors: Sven Antoin Johan Hol, Jan Van Eijk, Angelo Oscar Peter De Klerk, Harmen Klaas Van Der Schoot