Patent US2631927A successfully refreshed from Google Patents.
US2631927A
Expired / Lapsed
US
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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 19:41
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,
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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) | 1956-03-16 | 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 |