US2984542A
Expired / Lapsed
US
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Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-01-30
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Granted: 1961-05-16
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Expires: 1977-01-30
Abstract
No abstract record available.
Inventors
- 👤 Carl E Kleiber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:55
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/20; G01N25/22; G01N25/28; G01N25/30; G01N25/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS FOR INDICATING THE EXTENT OF REGENERATION OF FINELY DIVIDED CRACKING CATALYST MAINTAINED AS A DENSE FLUIDIZED BED IN A REGENERATION ZONE WHICH COMPRISES INTRODUCING A CONTROLLED AMOUNT OF AIR INTO THE LOWER PORTION OF A VERTICALLY ARRANGED NARROW CONFINED PASSAGEWAY AT LEAST PARTIALLY SUBMERGED IN SAID DENSE FLUIDIZED BED, ENTRAINING A DEFINITE AMOUNT OF CATALYST PARTICLES FROM SAID DENSE BED BY THE PASSAGE OF AIR THROUGH SAID CONFINED PASSAGEWAY AND MEASURING ANY DIFFERENCE IN TEMPERATURE IN THE UPPER PORTION OF SAID PASSAGEWAY AND THE DENSE FLUIDIZED BED IN SAID REGENERATION ZONE.
Claim 2
Dependent Claim
93 words
A PROCESS FOR INDICATING THE EXTENT OF REGENERATION OF FINELY DIVIDED CRACKING CATALYST MAINTAINED AS A DENSE FLUIDIZED BED IN A REGENERATION ZONE WHICH COMPRISES INTRODUCING A CONTROLLED AMOUNT OF AIR INTO THE LOWER PORTION OF A VERTICALLY ARRANGED NARROW CONFINED PASSAGEWAY AT LEAST PARTIALLY SUBMERGED IN SAID DENSE FLUIDIZED BED, ENTRAINING A DEFINITE AMOUNT OF CATALYST PARTICLES FROM SAID DENSE BED BY THE PASSAGE OF AIR THROUGH SAID CONFINED PASSAGEWAY AND MEASURING ANY DIFFERENCE IN TEMPERATURE IN THE UPPER PORTION OF SAID PASSAGEWAY AND THE DENSE FLUIDIZED BED IN SAID REGENERATION ZONE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |