Treatment of furnace tubes
US5630887A · kind A · utility
14Cited by
5References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1996 |
| Grant date | May 20, 1997 |
| Priority date | — |
| Expiry date | May 20, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C8/18
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Stainless steel which is used in applications in the petrochemical industry may be treated by exposure to an atmosphere containing a low amount of oxygen at temperatures up to 1200.degree. C. for up to about 50 hours. The treated steel has a lower tendency to coke during use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.