US2911290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage fluidized bed reactor
Assignee: Individual
•
Filing: 1957-04-18
•
Granted: 1959-11-03
•
Expires: 1977-04-18
Abstract
No abstract record available.
Inventors
- 👤 Albert A Jonke
- 👤 Johan E A Graae
- 👤 Norman M Levitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:24
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1881; B01J8/189; B01J8/24; B01J8/26; B01J8/28; B01J8/30; B01J8/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A MULTISTAGE FLUIDIZED-BED REACTOR COMPRISING A VERTICAL CYLINDRICAL COLUMN, A PLURALITY OF STAGES DISPOSED ACROSS THE COLUMN, EACH STAGE COMPRISING AN OPEN-ENDED INVERTED CONE FORMING A PERFORATION IN THE STAGE, A PLURALITY OF BAFFLES LOCATED JUST BELOW THE STAGES, EACH BAFFLE HAVING A SMALL HOLE LOCATED JUST BELOW THE APEX OF THE CONE OF THE ASSOCIATED STAGE, A PLURALITY OF LOW WEIRS, ONE EXTENDING AROUND EACH BAFFLE, A PLURALITY OF ELONGATED TUBES, ONE EXTENDING THROUGH THE CONES IN OFFSET DOWNCOMER PIPES EXTENDING THROUGH THE CONES IN OFFSET RELATION TO THE AXES THEREOF, MEANDS FOR INTRODUCING FLUIDIZING GAS IN THE BOTTOM OF THE COLUMN, A VENT FOR THE FLUIDIZING GAS AT THE TOP OF THE COLUMN, A FEED INLET NEAR THE TOP OF THE COLUMN, AND A PRODUCT OUTLET NEAR THE BOTTOM OF THE COLUMN.
Claim 2
Dependent Claim
134 words
A MULTISTAGE FLUIDIZED-BED REACTOR COMPRISING A VERTICAL CYLINDRICAL COLUMN, A PLURALITY OF STAGES DISPOSED ACROSS THE COLUMN, EACH STAGE COMPRISING AN OPEN-ENDED INVERTED CONE FORMING A PERFORATION IN THE STAGE, A PLURALITY OF BAFFLES LOCATED JUST BELOW THE STAGES, EACH BAFFLE HAVING A SMALL HOLE LOCATED JUST BELOW THE APEX OF THE CONE OF THE ASSOCIATED STAGE, A PLURALITY OF LOW WEIRS, ONE EXTENDING AROUND EACH BAFFLE, A PLURALITY OF ELONGATED TUBES, ONE EXTENDING THROUGH THE CONES IN OFFSET DOWNCOMER PIPES EXTENDING THROUGH THE CONES IN OFFSET RELATION TO THE AXES THEREOF, MEANDS FOR INTRODUCING FLUIDIZING GAS IN THE BOTTOM OF THE COLUMN, A VENT FOR THE FLUIDIZING GAS AT THE TOP OF THE COLUMN, A FEED INLET NEAR THE TOP OF THE COLUMN, AND A PRODUCT OUTLET NEAR THE BOTTOM OF THE COLUMN.
References Cited (Backward Citations)
US2698321A
Cited
US2531068A
Cited
US2480639A
Cited
US2715565A
Cited
US2750258A
Cited
US2876079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |