US2631927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for removal of carbonaceous deposits from powdered solids
Assignee: Shell Development Co
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Filing: 1950-02-28
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Granted: 1953-03-17
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Expires: 1970-02-28
Abstract
No abstract record available.
Inventors
- 👤 Richard P Trainer
- 👤 Lawson E Border
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:30
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; B01J20/00; B01J20/02; B01J20/10; B01J20/12; B01J20/30; B01J20/34; B01J20/3433; B01J20/345; B01J20/3458; B01J20/3483
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
A REGENERATOR OF THE BOTTOM DRAW-OFF TYPE FOR REGENERATING CONTAMINATED FLUIDIZED SOLIDS, SAID REGENERATOR BEING CHARACTERIZED BY A VERTICAL PARTITION EXTENDING ACROSS SAID REGENERATOR FROM WALL TO WALL FROM POINTS SHORT OF THE TOP THEREOF AND SHORT OF THE BOTTOM THEREOF AND BETWEEN AND INLET FOR THE INTRODUCTION OF THE SOLID TO BE REGENERATED, AND AN OUTLET FOR THE REMOVAL OF THE REGENERATED SOLID, A TROUGH IN THE UPPER PART OF THE REGENERATOR SEALING THE VESSEL FROM THE WALL THEREOF ON ONE SIDE TO THE TOP SAID PARTITION,
References Cited (Backward Citations)
US2057232A
Cited
US2409234A
Cited
US2304128A
Cited
US2451619A
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US2490986A
Cited
US2480887A
Cited
US2432298A
Cited
US2450753A
Cited
US2526881A
Cited
US2571380A
Cited
US2580827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |