Patent · US Expired

Apparatus for manufacturing high quality crystals

US4267154A · kind A · utility

3Cited by

4References

4Claims

0Family size

Assignees

Georg Mueller · DE
Herbert Weiss · DE

Inventors

Georg Mueller · Glattbrugg, CH
Herbert Weiss · Diedorf, DE

Key dates

Filing date	Aug 20, 1979
Grant date	May 12, 1981
Priority date	—
Expiry date	Aug 20, 1999

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T117/1092
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Method and apparatus for manufacturing high quality crystals whereby crystal growth occurs from a melt or a gas phase and during such growth, the growing crystals are subjected to a gravitational acceleration generating and reinforcing the development of a chronologically constant, highly stationary, convection current within the growing crystal. The apparatus includes a centrifuge means having a crystal growth means mounted thereon, along with means for controlling the centrifuge and for controlling the thermal system associated with the crystal growth means.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.