The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 2014
Filed:
Jan. 13, 2012
Georg Pietsch, Burghausen, DE;
Georg Pietsch, Burghausen, DE;
Siltronic AG, Munich, DE;
Abstract
A method provides a respective flat working layer on each of two working disks of a double-side processing apparatus including a ring-shaped upper working disk, a ring shaped lower working disk and a rolling apparatus that are rotatably mounted about an axis of symmetry of the double-side processing apparatus. The method includes applying a lower intermediate layer and upper intermediate layer on respective surfaces of the lower and upper working disks. Then, simultaneous leveling of both intermediate layers is performed by moving trimming apparatuses on cycloidal paths over the intermediate layers using the rolling apparatus and the respective outer toothing under pressure and with addition of a cooling lubricant, so as to provide a material removal from the intermediate layers. A lower working layer of uniform thickness is then applied to the lower intermediate layer and an upper working layer of uniform thickness is applied to the upper intermediate layer.