Evaporating boats containing titanium diboride
US4847031A · kind A · utility
4Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1987 |
| Grant date | Jul 11, 1989 |
| Priority date | — |
| Expiry date | Dec 16, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/915
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Self-resistance heated, electrically conductive, refractory evaporating boats containing titanium diboride can be reclaimed for reuse. If there is aluminum adhering to the boats, they are first leached in hot caustic solution to remove the aluminum. After rinsing and drying, the boats are ground to powder which is then screened. The screened powder is used to manufacture new boats.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.