US2618074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst stripping and apparatus therefor
Assignee: Shell Development Co
•
Filing: 1950-11-28
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Granted: 1952-11-18
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Expires: 1970-11-28
Abstract
No abstract record available.
Inventors
- 👤 Richard P Trainer
- 👤 Lawson E Border
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:42
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18; B; B01; B01J; B01J8/00; B01J8/0015; B01J8/18; B01J8/1845; B01J8/1863
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
AN APPARATUS FOR THE STRIPPING OF FINELY DIVIDED POWDER CONTAMINATED WITH VOLATILIZABLE MATERIAL WHICH COMPRISES IN COMBINITATION A VESSEL COMPRISING A VERTICALLY DISPOSED SUBSTANTIALLY CYLINDRICAL SHELL HAVING BOTTOM AND TOP CLOSURES, A LOWER CONDUIT FOR THE DISCHARGE OF STRIPPED POWDER, AN UPPER CONDUIT FOR THE DISCHARGE OF STRIPPING VAPORS, VERTICAL BAFFLES DIVIDING THE LOWER SECTION OF SAID VESSEL INTO CELLS, MEANS NEAR THE BOTTOM OF SAID SHELL FOR INJECTING STRIPPING GASES INTO SAID CELLS, DISK AND DOUGHNUT BAFFLES IN SAID SHELL ABOVE SAID VERTICAL BAFFLES, A MIXING VESSEL WITHIN SAID VESSEL ABOVE SAID DISK AND DOUGHNUT BAFFLES AND BELOW SAID UPPER CONDUIT, SAID MIXING VESSEL HAVING SEPARATE INLET CONDUITS FOR TWO STREAMS OF POWDER, AND MEANS FOR DISTRIBUTING POWDER FROM SAID MIXING VESSEL OVER SAID DISK AND DOUGHNUT BAFFLES.
Claim 2
Independent Claim
129 words
AN APPARATUS FOR THE STRIPPING OF FINELY DIVIDED POWDER CONTAMINATED WITH VOLATILIZABLE MATERIAL WHICH COMPRISES IN COMBINITATION A VESSEL COMPRISING A VERTICALLY DISPOSED SUBSTANTIALLY CYLINDRICAL SHELL HAVING BOTTOM AND TOP CLOSURES, A LOWER CONDUIT FOR THE DISCHARGE OF STRIPPED POWDER, AN UPPER CONDUIT FOR THE DISCHARGE OF STRIPPING VAPORS, VERTICAL BAFFLES DIVIDING THE LOWER SECTION OF SAID VESSEL INTO CELLS, MEANS NEAR THE BOTTOM OF SAID SHELL FOR INJECTING STRIPPING GASES INTO SAID CELLS, DISK AND DOUGHNUT BAFFLES IN SAID SHELL ABOVE SAID VERTICAL BAFFLES, A MIXING VESSEL WITHIN SAID VESSEL ABOVE SAID DISK AND DOUGHNUT BAFFLES AND BELOW SAID UPPER CONDUIT, SAID MIXING VESSEL HAVING SEPARATE INLET CONDUITS FOR TWO STREAMS OF POWDER, AND MEANS FOR DISTRIBUTING POWDER FROM SAID MIXING VESSEL OVER SAID DISK AND DOUGHNUT BAFFLES.
References Cited (Backward Citations)
US2506545A
Cited
US2556198A
Cited
US2394814A
Cited
US2506552A
Cited
US2534778A
Cited
US2510444A
Cited
US2530645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |