US2990260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grid design for fluid bed reactor
Assignee: Pan American Petroleum Corp
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Filing: 1957-12-16
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Granted: 1961-06-27
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Expires: 1977-12-16
Abstract
No abstract record available.
Inventors
- 👤 Mungen Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:25
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A CATALYTIC APPARATUS COMPRISING IN COMBINATION A REACTION VESSEL ADAPTED TO CONTAIN A BED OF FLUIDIZED SOLIDS, A GRID IN THE LOWER PORTION OF SAID VESSEL HAVING UPWARDLY DIVERGING CONICAL MEMBERS ARRANGED SO AS TO DESCRIBE A UNIFORMLY DEFINED PATTERN OF CAVITIES OVER THE TOP SIDE OF SAID GRID, EACH OF SAID CAVITIES TERMINATING IN A RESTRICTED PASSAGEWAY EXTENDING THROUGH SAID GRID TO THE OPPOSITE SIDE THEREOF AND OPENING INTO A CHAMBER LOCATED BELOW AND ATTACHED TO SAID REACTION VESSEL, SAID CHAMBER BEING PROVIDED WITH MEANS OF ACCESS THERETO, AND A STRUCTURALLY STABLE POROUS PLUG MEMBER DETACHABLY FITTED IN EACH OF SAID PASSAGEWAYS ON THE LEVEL OF SAID GRID TO FORM A GASPERMEABLE CLOSURE FOR SAID CAVITIES.
Claim 2
Dependent Claim
117 words
A CATALYTIC APPARATUS COMPRISING IN COMBINATION A REACTION VESSEL ADAPTED TO CONTAIN A BED OF FLUIDIZED SOLIDS, A GRID IN THE LOWER PORTION OF SAID VESSEL HAVING UPWARDLY DIVERGING CONICAL MEMBERS ARRANGED SO AS TO DESCRIBE A UNIFORMLY DEFINED PATTERN OF CAVITIES OVER THE TOP SIDE OF SAID GRID, EACH OF SAID CAVITIES TERMINATING IN A RESTRICTED PASSAGEWAY EXTENDING THROUGH SAID GRID TO THE OPPOSITE SIDE THEREOF AND OPENING INTO A CHAMBER LOCATED BELOW AND ATTACHED TO SAID REACTION VESSEL, SAID CHAMBER BEING PROVIDED WITH MEANS OF ACCESS THERETO, AND A STRUCTURALLY STABLE POROUS PLUG MEMBER DETACHABLY FITTED IN EACH OF SAID PASSAGEWAYS ON THE LEVEL OF SAID GRID TO FORM A GASPERMEABLE CLOSURE FOR SAID CAVITIES.
References Cited (Backward Citations)
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Cited
US2585274A
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US2656258A
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Cited
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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) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |