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. 24, 2004
Filed:
Feb. 21, 2003
Hubert De Steur, Drongen, BE;
Alexander Kilthau, Bad Schoenborn, DE;
Andre Kletti, Sandhausen, DE;
Hans Juergen Mayer, Viernheim, DE;
Petra Mitzinneck, Karlsruhe, DE;
Eddy Roelants, Brugge, BE;
Oliver Thuerk, Graben-Neudorf, DE;
Marc Van Biesen, Gent, BE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
When holes are being drilled in an electric circuit substrate, a laser beam is moved on concentric circular tracks in the region of the hole to be drilled. The transition from one circular track to the next takes place in each case on an arc that departs approximately tangentially from the circular track last traversed and nestles approximately tangentially against the circular track newly to be described in such a way that in each case the starting point of a new circular track is offset by a prescribed angle from the starting point of the preceding circular track.