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:
Oct. 12, 2010
Filed:
Jul. 13, 2007
Applicants:
Stefan Acker, Waldeck, DE;
Juergen Weisser, Jena, DE;
Ronny Ullmann, Altenberga, DE;
Inventors:
Assignee:
JENOPTIK Automatisierungstechnik GmbH, Jena, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 26/40 (2006.01); C03C 23/00 (2006.01); G01N 21/896 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention is directed to a method for generating optically perceptible laser-induced cracks in brittle material, wherein a laser beam, followed by a coolant jet, is guided relative to the surface of the brittle material in order to advance a crack trail into the material starting from an initial crack, and wherein a marking agent which penetrates into the crack during the formation of the crack so as to make the latter visible is mixed with the coolant.