Method and apparatus for controlling the size of powder produced by the Armstrong Process
US7501089B2 · kind B2 · utility
7Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2003 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | May 12, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B34/1272
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A needle valve is disclosed for controlling the quantity of a halide vapor to be injected into a liquid metal. The needle valve may seat in a supersonic nozzle from which the halide vapor exits. Various products made with the apparatus of the invention are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.