Patent US2968683A successfully refreshed from Google Patents.
US2968683A
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Process for heating beds of solid particles spouted with gas
Assignee: Shawinigan Chemicals Ltd
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Filing: 1960-03-25
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Granted: 1961-01-17
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Expires: 1980-03-25
Abstract
No abstract record available.
Inventors
- 👤 Konrad H Kossmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:56
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/42; B01J8/245; Y; Y10; Y10S; Y10S118/00; Y10S118/05; Y10S159/00; Y10S159/03; Y10S585/00; Y10S585/909; Y10S585/911; Y10S585/913
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
A PROCESS FOR PREPARING OLEFINS FROM A HYDROCARBON GAS WHICH PROCESS COMPRISES DIRECTING A JET OF THE SAID GAS UP THROUGH A BED OF CONDUCTIVE GRANULAR CARBON TO FORM A SPOUTED BED, PASSING AN ELECTRIC CURRENT THROUGH THE SPOUTED BED BETWEEN A SINGLE CENTRAL ELECTRODE WHICH MAKES CONTACT WITH THE DILUTE SUSPENSION OF SAID GRANULES IN THE SPOUT OF SAID BED AND AT LEAST ONE OTHER ELECTRODE WHICH MAKES CONTACT WITH THE ANNULAR LOOSELY PACKED MOVING BODY OF PARTICLES SURROUNDING THE SAID SPOUT, SAID ELECTRIC CURRENT HAVING SUFFICIENT POWER TO MAINTAIN THE SPOUTED BED AT AN ELEVATED TEMPERATURE SUFFICIENT TO CRACK THE SAID HYDROCARBON GASES TO OLEFINS, AND RECOVERING OLEFINS FROM THE EFFLUENT GASES.
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) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |