Global Patent Index - EP 4271856 A1

EP 4271856 A1 20231108 - PROCESS FOR MANUFACTURING A MONOCRYSTALLINE CRYSTAL, IN PARTICULAR A SAPPHIRE

Title (en)

PROCESS FOR MANUFACTURING A MONOCRYSTALLINE CRYSTAL, IN PARTICULAR A SAPPHIRE

Title (de)

VERFAHREN ZUR HERSTELLUNG EINES EINKRISTALLINEN KRISTALLS, INSBESONDERE EINES SAPHIRS

Title (fr)

PROCÉDÉ DE FABRICATION D'UN CRISTAL MONOCRISTALLIN, EN PARTICULIER UN SAPHIR

Publication

EP 4271856 A1 20231108 (DE)

Application

EP 21840774 A 20211228

Priority

  • AT 511452020 A 20201229
  • AT 2021060489 W 20211228

Abstract (en)

[origin: WO2022140807A1] The invention relates to a process for manufacturing a monocrystalline crystal, in particular a sapphire, wherein a monocrystalline seed crystal is placed in a base region of a crucible (3) having a cylindrical jacket-type crucible wall (4) or forms a base of the crucible (3), and a crystallographic c-axis of the seed crystal is oriented according to a longitudinal crucible axis extending in the vertical direction of the crucible wall, whereupon a basic material is placed over the seed crystal in the crucible and is fused such that a crystal grows continually in the direction of the c-axis as a result of crystallization at a boundary layer between the fused basic material and the seed crystal.

IPC 8 full level

C30B 11/00 (2006.01); C30B 11/14 (2006.01); C30B 29/20 (2006.01)

CPC (source: AT EP US)

C30B 11/001 (2013.01 - US); C30B 11/002 (2013.01 - EP US); C30B 11/003 (2013.01 - EP US); C30B 11/02 (2013.01 - US); C30B 11/14 (2013.01 - AT EP US); C30B 29/20 (2013.01 - EP)

Citation (search report)

See references of WO 2022140807A1

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 2022140807 A1 20220707; AT 524600 A1 20220715; AT 524600 B1 20230515; AU 2021414764 A1 20230817; CN 116745470 A 20230912; EP 4271856 A1 20231108; US 2024060206 A1 20240222

DOCDB simple family (application)

AT 2021060489 W 20211228; AT 511452020 A 20201229; AU 2021414764 A 20211228; CN 202180088104 A 20211228; EP 21840774 A 20211228; US 202118270095 A 20211228