US4880450B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclone separator having water-steam cooled walls
Assignee: Foster Wheeler Energy Corp
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Filing: 1988-02-29
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Granted: 1992-08-04
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Expires: 2008-02-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:55
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/08; B04C5/20; B07; B07C; B07C5/00; B07C5/16; B07C5/18; B07C5/20; F; F22; F22B; F22B31/00; F22B31/0007; F22B31/0084; F23; F23J; F23J15/00; F23J15/02; F23J15/022; F23J15/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-04 | 1996-02-03 | 1996-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-04 | 2000-02-03 | 2000-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-04 | 2004-02-03 | 2004-08-04 | $7700.00 | Window Closed / Lapsed |