US Patent Issued to LPKF LASER & ELECTRONICS on April 14 for "Method for making a recess or opening into a planar workpiece using successive etching" (German Inventors)

ALEXANDRIA, Va., April 15 -- United States Patent no. 12,604,743, issued on April 14, was assigned to LPKF LASER & ELECTRONICS AG (Garbsen, Germany).

"Method for making a recess or opening into a planar workpiece using successive etching" was invented by Norbert Ambrosius (Kevelaer, Germany) and Roman Ostholt (Langenhagen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for making a recess or opening in a planar workpiece with a thickness of less than 3 millimeters includes successively etching a plurality of flaws to form the recess or opening such that a contour of the recess or opening has a sequence of widenings and constrictions as a result of the etching."

The patent was filed on April...