Method of forming hybrid arc tubes
US4999145A · kind A · utility
7Cited by
1References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1989 |
| Grant date | Mar 12, 1991 |
| Priority date | — |
| Expiry date | Dec 15, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/64
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed is a method for forming alumina arc tubes of complex shapes. The method comprises molding alumina powders with different shrinkage rates into a green body. The green body is prefired to remove binders in the green body and then sintered. The resulting arc tube has an inner diameter that is smallest where the highest shrinkage powder was molded and an inner diameter that is greatest where the lowest shrinkage powder was used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.