3-D carbon-carbon composites for crystal pulling furnace hardware
US5616175A · kind A · utility
14Cited by
23References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1994 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | Jul 22, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T117/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A piece of crystal pulling furnace hardware, especially one selected from among crucible holder tops, crucible holder bottoms, heaters, heat shields, and pedestals, is provided as a three-dimensional carbon-carbon composite. The enhanced physical properties of such a material provide advantages in the diameter of the crystal being pulled, the use of larger charges of crystallizable material in the furnace, and an increased life for the hardware.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.