Patents by Inventor Johan Van der Maaden

Johan Van der Maaden 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).

  • Positioning device having two manipulators operating in parallel, and optical lithographic device provided with such a positioning device
    Patent number: 5301013
    Abstract: A positioning device has two transport arms for alternately transferring plate-shaped objects from a storage position into an operational position. The transport arms are each displaceable by means of a separate manipulator, so that a quick exchange of the objects is possible. The manipulators each comprise two parallel Y-guides which are fastened to a frame, and an X-guide which is displaceable along the two Y-guides, while the transport arms are each displaceable along one of the X-guides. The positioning device is used in an optical lithographic device for alternately placing masks on a mask support. A machine frame of the optical lithographic device to which the mask support is fastened is coupled to the frame of the positioning device by spring members. To render an accurate positioning of the masks on the mask support possible, the optical lithographic device is provided with an optical sensor system which is coupled to an electronic control unit for controlling the positioning device.
    Type: Grant
    Filed: April 21, 1992
    Date of Patent: April 5, 1994
    Assignee: U.S. Philips Corporation
    Inventors: Hendricus J. M. Meijer, Johannes A. Rozenveld, Adrianus J. Vermeer, Jan A. Markvoort, Johan van der Maaden, Jan van Eijk
  • Method of manufacturing an elongate article
    Patent number: 4887354
    Abstract: A method of manufacturing an elongate article, in particular an optical cable which comprises a carrier member having channels or bores and is provided with elongate elements, for example, optical fibres, the elongate element being inserted into the end of a channel or bore and the carrier member being subjected to a periodic movement, the elements moving in the channel or bore under the influence of the movement and as a result of their mass inertia.The invention also relates to a device for carrying out the method and to elongate articles, for example, optical cables manufactured by means of the method.
    Type: Grant
    Filed: November 22, 1982
    Date of Patent: December 19, 1989
    Assignee: U.S. Philips Corporation
    Inventor: Johan Van Der Maaden
  • Method of bonding optical fibers to form a flat cable
    Patent number: 4724024
    Abstract: A flat type optical cable comprises parallelly extending optical fibers which are interconnected by a light-cured lacquer of acrylic acid asters. The lacquer is present only on the facing circumferential parts of the optical fibers.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: February 9, 1988
    Assignee: U.S. Philips Corporation
    Inventors: Hendrik S. Van Der Velde, Klaus B. Schildbach, Johan Van Der Maaden
  • Flat type optical cable and an optical cable composed of several flat type cables
    Patent number: 4666244
    Abstract: A flat type optical cable comprises parallelly extending optical fibers which are interconnected by a light-cured lacquer of acrylic acid esters. The lacquer is present only on the facing circumferential parts of the optical fibers.
    Type: Grant
    Filed: May 23, 1985
    Date of Patent: May 19, 1987
    Assignee: U.S. Philips Corporation
    Inventors: Hendrik S. Van der Velde, Klaus B. Schildbach, Johan Van der Maaden