Increased stability low concentration gases, products comprising same, and methods of making same
US7799150B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2007 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Oct 26, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12972
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Methods of passivating a metal surface are described, the methods comprising the steps of i) exposing the metal surface to a silicon-containing passivation material; ii) evacuating the metal surface; iii) exposing the treated surface to a gas composition having a concentration of reactive gas that is greater than an intended reactive gas concentration of gas to be transported by the metal surface; iv) evacuating the metal surface to remove substantially all of the gas composition to enable maintenance of an increased shelf-life, low concentration reactive gas at an intended concentration; and v) exposing the metal surface to the reactive gas at the intended reactive gas concentration. Manufactured products, high stability fluids, and methods of making same are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.