Patents by Inventor Manfred Schoenhofer

Manfred Schoenhofer 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).

  • Wire guide roll for wire saw and method
    Patent number: 10245661
    Abstract: A wire guide roll for use in wire saws for simultaneously slicing a multiplicity of wafers from a cylindrical workpiece is provided with a coating having a thickness of at least 2 mm and at most 7.5 mm of a material which has a Shore A hardness of at least 60 and at most 99, and which contains a multiplicity of grooves through which the sawing wire is guided, the grooves each having a curved groove base with a radius of curvature which is 0.25-1.6 times the sawing wire diameter, and an aperture angle of 60-130°. A multiplicity of wafers are simultaneously sliced from a cylindrical workpiece by a wire saw using such wire guide rolls.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: April 2, 2019
    Assignee: Siltronic AG
    Inventors: Anton Huber, Engelbert Auer, Manfred Schoenhofer, Helmut Seehofer, Peter Wiesner
  • Wire Guide Roll For Wire Saw
    Publication number: 20080264228
    Abstract: A wire guide roll for use in wire saws for simultaneously slicing a multiplicity of wafers from a cylindrical workpiece is provided with a coating having a thickness of at least 2 mm and at most 7.5 mm of a material which has a Shore A hardness of at least 60 and at most 99, and which contains a multiplicity of grooves through which the sawing wire is guided, the grooves each having a curved groove base with a radius of curvature which is 0.25-1.6 times the sawing wire diameter, and an aperture angle of 60-130°. A multiplicity of wafers are simultaneously sliced from a cylindrical workpiece by means of a wire saw using such wire guide rolls.
    Type: Application
    Filed: April 21, 2008
    Publication date: October 30, 2008
    Applicant: SILTRONIC AG
    Inventors: Anton Huber, Engelbert Auer, Manfred Schoenhofer, Helmut Seehofer, Peter Wiesner