US2608474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for contacting gaseous fluids with powdered solids
Assignee: Shell Development Co
•
Filing: 1949-01-14
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Granted: 1952-08-26
•
Expires: 1969-01-14
Abstract
No abstract record available.
Inventors
- 👤 Gilliam Alpha Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:45
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
AN APPARATUS FOR CONTACTING A GASEOUS FLUID WITH A FINELY DIVIDED SOLID CATALYST WHICH COMPRISES IN COMBINATION, A VERTICALLY DISPOSED CYLINDRICAL CHAMBER HAVING A CONICAL BOTTOM CLOSURE, A HORIZONTALLY DISPOSED GAS DISTRIBUTION GRID HAVING LESS THAN 10% OF OPEN AREA AND LOCATED AT SUBSTANTIALLY THE TOP OF SAID BOTTOM CLOSURE, A GASEOUS FLUID INLET CONDUIT ENTERING SAID BOTTOM CLOSURE BELOW SAID GAS DISTRIBUTION GRID, A PLURALITY OF OPEN-ENDED GAS DIRECTING CONDUITS HAVING A COMBINED CROSS-SECTIONAL AREA SUBSTANTIALLY EQUAL TO THE CROSS-SECTIONAL AREA OF SAID GASEOUS FLUID INLET CONDUIT, SAID GAS DIRECTING CONDUITS LEADING RADIALLY FROM SAID GASEOUS FLUID INLET CONDUITS TOWARDS THE PERIPHERY OF SAID GAS DISTRIBUTION GRID BUT TERMINATING AT POINTS AT LEAST 4 FEET BELOW SAID GAS DISTRIBUTION GRID.
Claim 2
Independent Claim
121 words
AN APPARATUS FOR CONTACTING A GASEOUS FLUID WITH A FINELY DIVIDED SOLID CATALYST WHICH COMPRISES IN COMBINATION, A VERTICALLY DISPOSED CYLINDRICAL CHAMBER HAVING A CONICAL BOTTOM CLOSURE, A HORIZONTALLY DISPOSED GAS DISTRIBUTION GRID HAVING LESS THAN 10% OF OPEN AREA AND LOCATED AT SUBSTANTIALLY THE TOP OF SAID BOTTOM CLOSURE, A GASEOUS FLUID INLET CONDUIT ENTERING SAID BOTTOM CLOSURE BELOW SAID GAS DISTRIBUTION GRID, A PLURALITY OF OPEN-ENDED GAS DIRECTING CONDUITS HAVING A COMBINED CROSS-SECTIONAL AREA SUBSTANTIALLY EQUAL TO THE CROSS-SECTIONAL AREA OF SAID GASEOUS FLUID INLET CONDUIT, SAID GAS DIRECTING CONDUITS LEADING RADIALLY FROM SAID GASEOUS FLUID INLET CONDUITS TOWARDS THE PERIPHERY OF SAID GAS DISTRIBUTION GRID BUT TERMINATING AT POINTS AT LEAST 4 FEET BELOW SAID GAS DISTRIBUTION GRID.
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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) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |