Patent US3245295A successfully refreshed from Google Patents.
Patent US2663676A successfully refreshed from Google Patents.
US2663676A
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Catalyst recovery
Assignee: Standard Oil Development Co
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Filing: 1951-03-16
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Granted: 1953-12-22
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Expires: 1971-03-16
Abstract
No abstract record available.
Inventors
- 👤 Milton M Cardwell
- 👤 Otha C Roddey
- 👤 Charles W Tyson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:22
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/18; C10G35/00; C10G35/04; C10G35/10; C10G35/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A PROCESS FOR THE CONVERSION OF HYDROCARBONS IN CONTACT WITH FINELY DIVIDED CATALYST PARTICLES IN ACCORDANCE WITH THE FLUIDIZED SOLIDS TECHNIQUES WHEREIN HYDROCARBON FEED STOCK IS CONTACTED WITH A DENSE, FLUIDIZED BED OF CATALYST PARTICLES IN THE LOWER PORTION OF THE CONVERSION ZONE, THE IMPROVEMENT WHICH COMPRISES WITHDRAWING A STREAM OF VAPOROUS REACTION PRODUCTS CONTAINING RESIDUAL AMOUNTS OF ENTRAINED CATALYST PARTICLES FROM THE TOP OF THE CONVERSION ZONE, PARITALLY CONDENSING THE PRODUCT VAPORS TO SEPARATE THE RESIDUAL CATALYST AS A SLURRY IN HEAVY PRODUCT AND RECYCLING THE RECOVERED RESIDUAL CATALYST DIRECTLY INTO THE DISPERSE PHASE IN THE UPPER PORTION OF THE CONVERSION ZONE.
Claim 2
Dependent Claim
104 words
IN A PROCESS FOR THE CONVERSION OF HYDROCARBONS IN CONTACT WITH FINELY DIVIDED CATALYST PARTICLES IN ACCORDANCE WITH THE FLUIDIZED SOLIDS TECHNIQUES WHEREIN HYDROCARBON FEED STOCK IS CONTACTED WITH A DENSE, FLUIDIZED BED OF CATALYST PARTICLES IN THE LOWER PORTION OF THE CONVERSION ZONE, THE IMPROVEMENT WHICH COMPRISES WITHDRAWING A STREAM OF VAPOROUS REACTION PRODUCTS CONTAINING RESIDUAL AMOUNTS OF ENTRAINED CATALYST PARTICLES FROM THE TOP OF THE CONVERSION ZONE, PARITALLY CONDENSING THE PRODUCT VAPORS TO SEPARATE THE RESIDUAL CATALYST AS A SLURRY IN HEAVY PRODUCT AND RECYCLING THE RECOVERED RESIDUAL CATALYST DIRECTLY INTO THE DISPERSE PHASE IN THE UPPER PORTION OF THE CONVERSION 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) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |