EP 4208422 A1 20230712 - FLAT GLASS PANE
Title (en)
FLAT GLASS PANE
Title (de)
FLACHGLASSCHEIBE
Title (fr)
PLAQUE DE VERRE PLAT
Publication
Application
Priority
- LU 102045 A 20200903
- EP 2021074284 W 20210902
Abstract (en)
[origin: WO2022049205A1] The invention relates to a flat glass pane made of a base material, which is an alkali-containing silicate glass. The flat glass pane is characterized in that at least one surface layer is enriched with potassium and is depleted of sodium and/or lithium while an inner layer, in particular an inner layer directly adjoining the surface layer, is not enriched with potassium and is not depleted of sodium and/or lithium; and the flat glass pane has a compressive stress up to a compressive stress depth and a tensile stress starting from the compressive stress depth, wherein the tensile stress increases as the depth increases up to a tensile stress maximum arranged in the inner layer, and/or the curve of the tensile stress does not have a linear section depending on the depth, and/or the curve of the tensile stress does not have a section in which the tensile stress is constant depending on the depth.
IPC 8 full level
C03C 21/00 (2006.01); C03B 27/012 (2006.01); C03B 27/016 (2006.01)
CPC (source: EP KR US)
C03B 27/04 (2013.01 - US); C03B 27/0404 (2013.01 - KR); C03C 3/083 (2013.01 - KR US); C03C 3/091 (2013.01 - US); C03C 21/00 (2013.01 - EP KR); C03C 21/002 (2013.01 - US); C03B 27/04 (2013.01 - EP)
Citation (search report)
See references of WO 2022049205A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022049205 A1 20220310; CN 116348422 A 20230627; EP 4208422 A1 20230712; KR 20230059812 A 20230503; LU 102045 B1 20220303; TW 202214538 A 20220416; US 2023312389 A1 20231005
DOCDB simple family (application)
EP 2021074284 W 20210902; CN 202180070740 A 20210902; EP 21770234 A 20210902; KR 20237010175 A 20210902; LU 102045 A 20200903; TW 110132607 A 20210902; US 202118024355 A 20210902