Patent US2658822A successfully refreshed from Google Patents.
US2658822A
Expired / Lapsed
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Fluidized solids system
Assignee: Standard Oil Co
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Filing: 1949-08-17
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Granted: 1953-11-10
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Expires: 1969-08-17
Abstract
No abstract record available.
Inventors
- 👤 Robert J Hengstebeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:13
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
AN APPARATUS FOR CONTACTING FLUIDS WITH A FLUIDIZED FINELY DIVIDED SOLID OMPRISING A FIRST CONTACTING CHAMBER, A STRIPPING CHAMBER AND A SECOND CONTACTING CHAMBER, SAID STRIPPING CHAMBER BEING ELEVATED ABOVE SAID FIRST AND SECOND CONTACTING CHAMBERS, A CONDUIT LEADING DOWNWARDLY FROM A LOW POINT IN SAID FIRST CHAMBER TO A SOLIDS TRAP, A VAPOR TRANSFER LINE EXTENDING BETWEEN AN UPPER PART OF SAID TRAP AND AN UPPER PART OF SAID FIRST CHAMBER, A CONDUIT LEADING UPWARDLY FROM A LOW POINT IN SAID SOLIDS TRAP TO A HIGH POINT IN SAID STRIPPING CHAMBER, A STANDPIPE LEADING DOWNWARDLY FROM A LOW POINT IN SAID STRIPPING CHAMBER TO A LOW POINT IN SAID SECOND CHAMBER, MEANS FOR INTRODUCING A CARRIER AERATION GAS INTO SAID CONDUIT BETWEEN SAID TRAP AND SAID STRIP-
Claim 2
Independent Claim
128 words
AN APPARATUS FOR CONTACTING FLUIDS WITH A FLUIDIZED FINELY DIVIDED SOLID OMPRISING A FIRST CONTACTING CHAMBER, A STRIPPING CHAMBER AND A SECOND CONTACTING CHAMBER, SAID STRIPPING CHAMBER BEING ELEVATED ABOVE SAID FIRST AND SECOND CONTACTING CHAMBERS, A CONDUIT LEADING DOWNWARDLY FROM A LOW POINT IN SAID FIRST CHAMBER TO A SOLIDS TRAP, A VAPOR TRANSFER LINE EXTENDING BETWEEN AN UPPER PART OF SAID TRAP AND AN UPPER PART OF SAID FIRST CHAMBER, A CONDUIT LEADING UPWARDLY FROM A LOW POINT IN SAID SOLIDS TRAP TO A HIGH POINT IN SAID STRIPPING CHAMBER, A STANDPIPE LEADING DOWNWARDLY FROM A LOW POINT IN SAID STRIPPING CHAMBER TO A LOW POINT IN SAID SECOND CHAMBER, MEANS FOR INTRODUCING A CARRIER AERATION GAS INTO SAID CONDUIT BETWEEN SAID TRAP AND SAID STRIP-
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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) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |