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. 27, 2019
Filed:
Feb. 24, 2016
Applicant:
Coherent, Inc., Santa Clara, CA (US);
Inventors:
Edward C. Rea, Jr., Palo Alto, CA (US);
Hatim Haloui, Kaiserslautern, DE;
Assignee:
Coherent, Inc., , CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 26/06 (2014.01); B23K 26/0622 (2014.01); B23K 26/356 (2014.01); B23K 26/359 (2014.01);
U.S. Cl.
CPC ...
B23K 26/0624 (2015.10); B23K 26/356 (2015.10); B23K 26/359 (2015.10);
Abstract
An aluminum covered with an anodically formed aluminum oxide layer is marked by repeated bursts of two or more individual laser pulses. The intensity of the individual pulses in the bursts is kept below a level experimentally determined to compromise the integrity of the aluminum oxide layer. The collective fluence in a burst is sufficient to mark the aluminum, but not sufficient to compromise the integrity of the oxide layer.