US2941956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regeneration of contact material
Assignee: ExxonMobil Oil Corp
•
Filing: 1956-08-15
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Granted: 1960-06-21
•
Expires: 1976-08-15
Abstract
No abstract record available.
Inventors
- 👤 Eric V Bergstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:01
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/12; B01J38/00; B01J38/04; B01J38/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
THE PROCESS FOR REGENERATION OF A SOLID PARTICLEFORM CONTACT MASS MATERIAL WHICH HAS BECOME SPENT BY DEPOSITION OF A CARBONACEOUS DEPOSIT THERON AND WHICH EXITS AT A TEMPERATURE OF ABOUT 875*F., SUITABLE FOR INITIATING COMBUSTION OF SAID DEPOSIT, WHICH PROCESS COMPRISES: PASSING SAID PARTICLE-FORM SOLID MATERIAL DOWNWARDLY THROUGH A BURNING ZONE AS A SUBSTANTIALLY COMPACT COLUMN OF GRAVITATING PARTICLES, INTRODUCING AIR INTO THE BURNING ZONE AT A TEMPERATURE OF ABOUT 70-100*F., SPLITTING THE AIR STEAM INTO TWO STEAMS AT A POINT INTERMEDIATE THE ENDS OF THE COMPACT COLUMN OF PARTICLES IN THE BURNING ZONE, ONE STEAM PASSING UPWARDLY THROUGH THE COLUMN TO BURN OFF PART OF THE CONTAMINANT ON THE GRAVITATING PARTICLE-FORM MATERIAL AND BE WITHDRAWN FROM THE UPPER SECTION OF THE COLUMN THE SECOND STEAM PASSING DOWNWARDLY THROUGH THE COLUMN TO BURN OFF ADDITIONAL AMOUNTS OF CONTAMINANT FROM THE MATERIAL AND BE WITHDRAWN FROM THE COLUMN INTO SUBSTANTIALLY PARTICLEFREE FLUE-GAS WITHDRAWAL REGIONS IN THE LOWER SECTION OF THE COLUMN, COOLING THE PARTICLE-FROM MATERIAL AND GAS IN AN INDIRECT HEAT EXCHANGE ZONE LOCATED JUST ABOVE THE
Claim 2
Dependent Claim
176 words
THE PROCESS FOR REGENERATION OF A SOLID PARTICLEFORM CONTACT MASS MATERIAL WHICH HAS BECOME SPENT BY DEPOSITION OF A CARBONACEOUS DEPOSIT THERON AND WHICH EXITS AT A TEMPERATURE OF ABOUT 875*F., SUITABLE FOR INITIATING COMBUSTION OF SAID DEPOSIT, WHICH PROCESS COMPRISES: PASSING SAID PARTICLE-FORM SOLID MATERIAL DOWNWARDLY THROUGH A BURNING ZONE AS A SUBSTANTIALLY COMPACT COLUMN OF GRAVITATING PARTICLES, INTRODUCING AIR INTO THE BURNING ZONE AT A TEMPERATURE OF ABOUT 70-100*F., SPLITTING THE AIR STEAM INTO TWO STEAMS AT A POINT INTERMEDIATE THE ENDS OF THE COMPACT COLUMN OF PARTICLES IN THE BURNING ZONE, ONE STEAM PASSING UPWARDLY THROUGH THE COLUMN TO BURN OFF PART OF THE CONTAMINANT ON THE GRAVITATING PARTICLE-FORM MATERIAL AND BE WITHDRAWN FROM THE UPPER SECTION OF THE COLUMN THE SECOND STEAM PASSING DOWNWARDLY THROUGH THE COLUMN TO BURN OFF ADDITIONAL AMOUNTS OF CONTAMINANT FROM THE MATERIAL AND BE WITHDRAWN FROM THE COLUMN INTO SUBSTANTIALLY PARTICLEFREE FLUE-GAS WITHDRAWAL REGIONS IN THE LOWER SECTION OF THE COLUMN, COOLING THE PARTICLE-FROM MATERIAL AND GAS IN AN INDIRECT HEAT EXCHANGE ZONE LOCATED JUST ABOVE THE
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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) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |