Patent US2954341A successfully refreshed from Google Patents.
US2954341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon conversion process
Assignee: MW Kellogg Co
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Filing: 1955-06-15
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Granted: 1960-09-27
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Expires: 1975-06-15
Abstract
No abstract record available.
Inventors
- 👤 Samuel R Stiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:14
CPC Classifications
C; C10; C10G; C10G7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A HYDROCARBON CONVERSION PROCESS IN WHICH A HOT REACTION PRODUCT STREAM IS COOLED AND IS RECOVERED IN A PLURALITY OF FRACTIONATION ZONES OPERATED AT LOWER TEMPERATURES THAN THE TEMPERATURE OF SAID HOT PRODUCT STREAM, ONE OF SAID FRACTIONATION ZONES BEING OPERATED AT A RELATIVELY LOW BOTTOMS TEMPERATURE AND ANOTHER OF SAID FRACTIONATION ZONES BEING OPERATED AT A RELATIVELY HIGH BOTTOMS TEMPERATURES, THE METHOD FOR SUPPLYING HEAT TO THE FRACTIONATION ZONES WHICH COMPRISES SUPPLYING HEAT TO THE LOWER PORTION OF SAID RELATIVELY HIGH TEMPERATURE FRACTIONATION ZONE BY INDIRECT HEAT EXCHANGE WITH SAID HOT PRODUCT STREAM. SUPPLYING HEAT TO THE LOWER PORTION OF SAID RELATIVELY LOW TEMPERATURE FRACTIONATION ZONE BY IN DIRECT HEAT EXCHANGE WITH MATERIAL FROM THE LOWER POTTION OF SAID RELATIVELY HIGH TEMPERATURE FRACTIONATION ZONE, AND THEREAFTER RECOVERING SAID HOT PRODUCT STREAM IN SAID PLURALITY OF FRACTIONATION ZONES.
Claim 2
Dependent Claim
139 words
IN A HYDROCARBON CONVERSION PROCESS IN WHICH A HOT REACTION PRODUCT STREAM IS COOLED AND IS RECOVERED IN A PLURALITY OF FRACTIONATION ZONES OPERATED AT LOWER TEMPERATURES THAN THE TEMPERATURE OF SAID HOT PRODUCT STREAM, ONE OF SAID FRACTIONATION ZONES BEING OPERATED AT A RELATIVELY LOW BOTTOMS TEMPERATURE AND ANOTHER OF SAID FRACTIONATION ZONES BEING OPERATED AT A RELATIVELY HIGH BOTTOMS TEMPERATURES, THE METHOD FOR SUPPLYING HEAT TO THE FRACTIONATION ZONES WHICH COMPRISES SUPPLYING HEAT TO THE LOWER PORTION OF SAID RELATIVELY HIGH TEMPERATURE FRACTIONATION ZONE BY INDIRECT HEAT EXCHANGE WITH SAID HOT PRODUCT STREAM. SUPPLYING HEAT TO THE LOWER PORTION OF SAID RELATIVELY LOW TEMPERATURE FRACTIONATION ZONE BY IN DIRECT HEAT EXCHANGE WITH MATERIAL FROM THE LOWER POTTION OF SAID RELATIVELY HIGH TEMPERATURE FRACTIONATION ZONE, AND THEREAFTER RECOVERING SAID HOT PRODUCT STREAM IN SAID PLURALITY OF FRACTIONATION ZONES.
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) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |