Patents by Inventor Ludger Urban

Ludger Urban 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).

  • Patent number: 11155921
    Abstract: An apparatus for the vacuum treatment of substrates in a vacuum chamber includes a substrate support device with a pylon which can be rotated about a longitudinal axis and has holding means for substrates and a plasma discharge device assigned to the pylon. The plasma discharge device includes more than two plate-shaped electrodes having excitation areas, the excitation areas of which are all oriented in the direction of the pylon and a power supply device for the excitation of a plasma discharge, by at least one electrical voltage applied to at least two of the electrodes, is provided, the excited plasma acting at least on parts of the pylon and on substrates that can be arranged on them. A process performs the vacuum coating by the apparatus.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: October 26, 2021
    Assignee: BÜHLER ALZENAU GMBH
    Inventors: Torsten Schmauder, Ludger Urban, Wilfried Dicken, Jutta Trube
  • Publication number: 20180327902
    Abstract: An apparatus for the vacuum treatment of substrates in a vacuum chamber includes a substrate support device with a pylon which can be rotated about a longitudinal axis and has holding means for substrates and a plasma discharge device assigned to the pylon. The plasma discharge device includes more than two plate-shaped electrodes having excitation areas, the excitation areas of which are all oriented in the direction of the pylon and a power supply device for the excitation of a plasma discharge, by at least one electrical voltage applied to at least two of the electrodes, is provided, the excited plasma acting at least on parts of the pylon and on substrates that can be arranged on them. A process performs the vacuum coating by the apparatus.
    Type: Application
    Filed: November 7, 2016
    Publication date: November 15, 2018
    Applicant: BÜHLER ALZENAU GMBH
    Inventors: Torsten SCHMAUDER, Ludger URBAN, Wilfried DICKEN, Jutta TRUBE
  • Patent number: 5907982
    Abstract: A transmission for a twin-screw extruder with a housing (1) that accommodates a take-off shaft (5) driven by a gear and another take-off shaft (11) driven by the first take-off shaft and two distributor shafts (9) on each side. The housing is divided along a sectional joint (18) into directly connected halves (19 & 20). The housing has only one sectional joint, which is vertical and extends along the second take-off shaft. The second take-off shaft and the distributor shafts are accommodated in the sectional joint, the first take-off shaft in one housing half (20), and the driveshaft in the other housing half (19).
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: June 1, 1999
    Assignee: A. Friedr. Flender AG
    Inventor: Ludger Urban