US3431892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for combustion and heat recovery in fluidized beds
Assignee: Ind De Procedes & D Applic SA
•
Filing: 1967-08-02
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Granted: 1969-03-11
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Expires: 1987-08-02
Abstract
No abstract record available.
Inventors
- 👤 Albert Godel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:18
CPC Classifications
F; F23; F23C; F23C10/00; F23C10/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1680183A
Cited
FR914034A
Cited
GB639120A
Cited
US2730971A
Cited
FR1058527A
Cited
BE531658A
Cited
US2866696A
Cited
US2884373A
Cited
US3119379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |