ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,532,714, issued on Jan. 20, was assigned to SILTRONIC AG (Munich).
"Method for producing discs from a cylindrical rod made of a semiconductor material" was invented by Georg Pietsch (Burghausen, Germany) and Joachim Junge (Burghausen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method produces wafers from a cylindrical ingot of semiconductor material having an axis and an indexing notch in an outer surface of the cylindrical ingot and parallel to the axis. The method includes, in the order specified: (a) simultaneous removal of a multiplicity of sliced wafers from the cylindrical ingot by multi-wire slicing in the presence of a cutting agen...