US5048432B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the thermal decomposition of nitrous oxide
Assignee: Amec Foster Wheeler Energia Oy
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Filing: 1990-12-27
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Granted: 1996-07-02
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Expires: 2010-12-27
Abstract
Abstract A process and apparatus is presented for the reduction of nitrous oxide in the effluent from the combustion of a carbonaceous fuel. The process comprises raising the temperature of the effluent to a temperature of at least about 1700 DEG F. The apparatus utilized is a heating means which is disposed in a boiler at a location where the effluent is at a temperature of less than about 1700 DEG F.
Inventors
- 👤 John E Hofmann
- 👤 William H Sun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:31
CPC Classifications
F; F23; F23J; F23J15/00; F23J15/08; F23C; F23C10/00; F23C10/02; F23C10/04; F23C10/08; F23C10/10; F23C2206/00; F23C2206/10; F23C2206/101; F23J2215/00; F23J2215/10; F23J2215/101
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-07-02 | 2000-01-01 | 2000-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-02 | 2004-01-01 | 2004-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-02 | 2008-01-01 | 2008-07-02 | $7700.00 | Window Closed / Lapsed |