Microwave purification process
US7905942B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 9, 2008 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Sep 20, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/15
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of purifying a target powder having an oxygen content, the method comprising: flowing hydrogen gas through a microwave production chamber; applying microwaves to the hydrogen gas as the hydrogen gas flows through the microwave production chamber, thereby forming hydrogen radicals from the hydrogen gas; flowing the hydrogen radicals out of the microwave production chamber to the target powder disposed outside of the microwave production chamber; and applying the hydrogen radicals to the target powder, thereby removing a portion of the oxygen content from the powder. Preferably, the target powder is agitated as the hydrogen radicals are being applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.