Patents by Inventor Christopher Ras

Christopher Ras 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).

  • Method for actuating a multi-actuator drive device
    Patent number: 9692323
    Abstract: A method is disclosed for controlling a linear or rotary multi-actuator drive device having a stationary and a movable part. Relative movement between the stationary and the movable parts is generated via actuators having limited strokes, which are in substantially continuous frictional contact with the movable part either directly or via a force-transmitting mechanism, wherein control signals having a timing offset are used therefor, which force alternation between the slip phase and the stick phase for each actuator.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: June 27, 2017
    Assignee: SMARACT HOLDING GMBH
    Inventors: Axel Kortschack, Christoph Raβ
  • Sputtering magnetron control devices
    Publication number: 20060011470
    Abstract: Embodiments relate to manipulating and controlling the magnetic field profile of a magnetron within a sputtering system dynamically (i.e., in real time), to most effectively utilize the target material as required by any stage of its erosion and to sputter deposit films with a desired profile or characteristics. In particular, embodiments relate to dynamic positional and rotational control of the magnetron or individual elements of the magnetron to alter the magnetic field profile of the magnetron during deposition.
    Type: Application
    Filed: July 14, 2005
    Publication date: January 19, 2006
    Inventors: Gareth Hatch, Christopher Ras
  • Method for constructing permanent magnet assemblies
    Publication number: 20050086793
    Abstract: A method for constructing a permanent magnet assembly by using a non-magnetic frame between individual magnet segments to restrain the movement of the magnet segments. The frame restricts the movement of the magnets during assembly. The frame also provides an effective system for replacing magnets in the existing assembly.
    Type: Application
    Filed: October 22, 2003
    Publication date: April 28, 2005
    Inventors: Christopher Ras, Gareth Hatch, Mike Schilling