Coating process using dense phase gas
US5403621A · kind A · utility
69Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1993 |
| Grant date | Apr 4, 1995 |
| Priority date | — |
| Expiry date | Oct 1, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2401/90
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for coating a substrate with a chosen material comprising placing the substrate in a coating chamber and contacting the substrate with a mixture of the selected coating material in a chosen dense phase gas at a selected temperature and a pressure equal to or above the critical pressure of the dense phase gas for a period of time which is sufficient to allow complete penetration of the mixture into all surfaces of the substrate. Then, the phase of the dense phase gas is shifted to produce dissolution of the chosen material from the dense phase gas and to thereby form the coating of the chosen material on the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.