US3266788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidized bed reactor and method of operating same
Assignee: Dorr Oliver Inc
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Filing: 1964-07-16
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Granted: 1966-08-16
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Expires: 1984-07-16
Abstract
No abstract record available.
Inventors
- 👤 Walfred W Jukkola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:07
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; B01J8/28; F; F27; F27B; F27B15/00; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
81 words
A PROCESS FOR CALCINING FINELY DIVIDED SOLIDS COMPRISING THE STEPS OF ESTABLISHING AND MAINTAINING A FLUIDIZED REACTION ZONE OF FINELY DIVIDED SOLIDS, ESTABLISHING AND MAINTAINING A FLUIDIZED PREHEATING ZONE OF FINELY DIVIDED SOLIDS, MAINTAINING A SEPARATION ZONE BETWEEN SAID REACTION ZONE AND SAID PREHEATING ZONE, PASSING FINELY DIVIDED SOLIDS FROM SAID PREHEATING ZONE TO SAID REACTION ZONE, COUNTERCURRENTLY PASSING A FLUIDIZING GAS FROM SAID REACTION ZONE TO SAID PREHEATING ZONE, THROUGH SAID SEPARATION ZONE WHEREIN ENTRAINED SOLIDS IN SAID FLUIDIZING GAS
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |