US3011969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stripper design
Assignee: MW Kellogg Co
•
Filing: 1958-10-15
•
Granted: 1961-12-05
•
Expires: 1978-10-15
Abstract
No abstract record available.
Inventors
- 👤 Charles K Mader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:19
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; B01J8/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN A HYDROCARBON CONVERSION PROCESS WHEREIN A FINELY DIVIDED CATALYST IS CIRCULATED BETWEEN A REACTION ZONE, AND A REGENERATION ZONE, THE IMPROVEMENT WHICH COMPRISES, PASSING CATALYST CONTAMINATED WITH REACTION PRODUCTS FROM A DENSE FLUIDIZED BED OF CATALYST IN A REACTION ZONE THROUGH A FIRST VALVED OPENING IN A PARTITION SEPARATING A STRIPPING ZONE FROM SAID REACTION ZONE, SAID VALVED OPENING ARRANGED TO EXCLUDE FLOW OF CATALYTIC MATERIAL FROM THE STRIPPING ZONE INTO THE REACTION ZONE, STRIPPING THE CATALYST PASSED TO SAID STRIPPING ZONE WITH A SUITABLE STRIPPING GAS, WITHDRAWING STRIPPED CATALYTIC MATERIAL FROM THE LOWER PORTION OF THE STRIPPING ZONE AND PASSING THE STRIPPED CATALYTIC MATERIAL TO A REGENERATION
Claim 2
Dependent Claim
109 words
IN A HYDROCARBON CONVERSION PROCESS WHEREIN A FINELY DIVIDED CATALYST IS CIRCULATED BETWEEN A REACTION ZONE, AND A REGENERATION ZONE, THE IMPROVEMENT WHICH COMPRISES, PASSING CATALYST CONTAMINATED WITH REACTION PRODUCTS FROM A DENSE FLUIDIZED BED OF CATALYST IN A REACTION ZONE THROUGH A FIRST VALVED OPENING IN A PARTITION SEPARATING A STRIPPING ZONE FROM SAID REACTION ZONE, SAID VALVED OPENING ARRANGED TO EXCLUDE FLOW OF CATALYTIC MATERIAL FROM THE STRIPPING ZONE INTO THE REACTION ZONE, STRIPPING THE CATALYST PASSED TO SAID STRIPPING ZONE WITH A SUITABLE STRIPPING GAS, WITHDRAWING STRIPPED CATALYTIC MATERIAL FROM THE LOWER PORTION OF THE STRIPPING ZONE AND PASSING THE STRIPPED CATALYTIC MATERIAL TO A REGENERATION
References Cited (Backward Citations)
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Cited
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Cited
US2702267A
Cited
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Cited
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Cited
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Cited
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Cited
US2901331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |