US 11,891,326 B2
Method for processing glass by alkaline etching
Andreas Ortner, Gau-Algesheim (DE); Fabian Wagner, Mainz (DE); Markus Heiss-Chouquet, Bischofsheim (DE); Michael Drisch, Mainz (DE); Vanessa Glässer, Mainz (DE); Annika Hörberg, Mainz (DE); and Marisa Boles-Rehbogen, Mainz (DE)
Assigned to SCHOTT AG, Mainz (DE)
Filed by SCHOTT AG, Mainz (DE)
Filed on Oct. 14, 2021, as Appl. No. 17/450,957.
Claims priority of application No. 20201804 (EP), filed on Oct. 14, 2020.
Prior Publication US 2022/0112123 A1, Apr. 14, 2022
Int. Cl. C03C 15/00 (2006.01); C03C 3/097 (2006.01); C09K 13/02 (2006.01); C03C 25/68 (2006.01); B81C 1/00 (2006.01); C03C 23/00 (2006.01); C03C 3/087 (2006.01); C03C 3/091 (2006.01); C03C 3/093 (2006.01)
CPC C03C 15/00 (2013.01) [B81C 1/00539 (2013.01); C03C 3/087 (2013.01); C03C 3/091 (2013.01); C03C 3/093 (2013.01); C03C 3/097 (2013.01); C03C 23/0025 (2013.01); C03C 25/68 (2013.01); C09K 13/02 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method for processing glass, comprising:
providing a glass element; and
removing glass material from the glass element, wherein the removing step comprises:
introducing flaws into the glass element along a prescribed path with a laser beam of an ultrashort pulse laser; and
expanding the flaws in the glass element by etching with an alkaline etching medium in an organic solvent until the flaws connect,
wherein the alkaline etching medium has a water content of less than 5 percent by weight (wt-%) and the organic solvent comprises an alcohol.