Patent EP0795844A1 successfully refreshed from Google Patents.
US3154385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for pyrolysis of hydrocarbons
Assignee: Hercules Powder Co
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Filing: 1960-10-11
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Granted: 1964-10-27
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Expires: 1980-10-11
Abstract
No abstract record available.
Inventors
- 👤 John K Jacobs
- 👤 Jr Alden L Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:28
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/384; C10; C10G; C10G11/00; C10G9/00; C10G9/14; C10G2400/00; C10G2400/20; C10G2400/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
IN APPARATUS FOR THE PYROLYSIS OF HYDROCARBONS IN AN EXTERIORLY HEATED PYROLYSIS TUBE HAVING AN ELONGATED MAIN CORE DISPOSED THEREIN FORMING AN ANNULAR PASSAGE REACTION ZONE BETWEEN THE INTERIOR OF THE PYROLYSIS TUBE AND THE EXTERIOR OF THE MAIN CORE AND HAVING INJECTION MEANS FOR FEEDING A VAPORIZED MIXTURE OF HYDROCARBON AND DILUENT GAS INTO THE PYROLYSIS TUBE AND DOWNWARDLY THROUGH THE ANNULAR PASSAGE REACTION ZONE AND THEREFROM, THE IMPROVEMENT COMPRISING (A) AN ELONGATED INNER CORE INTERMEDIATELY DISPOSED WITHIN THE MAIN CORE FORMING AN ANNULAR PASSAGE SUPERHEAT ZONE BETWEEN THE INTERIOR OF THE MAIN CORE AND THE EXTERIOR OF THE INNER CORE, (B) THE INNER CORE BEING SUBSTANTIALLY IMPERVIOUS AND OF LESS LENGTH THAN THE MAIN CORE WITH THE DISTANCE FROM THE TOP OF THE INNER CORE TO THE TOP OF THE MAIN CORE BEING SUBSTANTIALLY GREATER THAN THE DISTANCE FROM THE BOTTOM OF THE INNER CORE TO THE BOTTOM OF THE MAIN CORE; AND (C) FEED MEANS AT THE BOTTOM OF THE MAIN CORE FOR PASSAGE OF ADDITIONAL DILUENT GAS THEREINTO AND UPWARDLY THROUGH THE ANNULAR PASSAGE SUPERHEAT ZONE AND FROM THE TOP OF THE MAIN CORE INTO THE VAPORIZED MIXTURE WHEREBY THE ENTIRE SUPERHEATED MIXTURE THUS FORMED PASSED DOWNWARDLY THROUGH THE ANNULAR PASSAGE REACTION ZONE AND THEREFROM.
Claim 2
Dependent Claim
209 words
IN APPARATUS FOR THE PYROLYSIS OF HYDROCARBONS IN AN EXTERIORLY HEATED PYROLYSIS TUBE HAVING AN ELONGATED MAIN CORE DISPOSED THEREIN FORMING AN ANNULAR PASSAGE REACTION ZONE BETWEEN THE INTERIOR OF THE PYROLYSIS TUBE AND THE EXTERIOR OF THE MAIN CORE AND HAVING INJECTION MEANS FOR FEEDING A VAPORIZED MIXTURE OF HYDROCARBON AND DILUENT GAS INTO THE PYROLYSIS TUBE AND DOWNWARDLY THROUGH THE ANNULAR PASSAGE REACTION ZONE AND THEREFROM, THE IMPROVEMENT COMPRISING (A) AN ELONGATED INNER CORE INTERMEDIATELY DISPOSED WITHIN THE MAIN CORE FORMING AN ANNULAR PASSAGE SUPERHEAT ZONE BETWEEN THE INTERIOR OF THE MAIN CORE AND THE EXTERIOR OF THE INNER CORE, (B) THE INNER CORE BEING SUBSTANTIALLY IMPERVIOUS AND OF LESS LENGTH THAN THE MAIN CORE WITH THE DISTANCE FROM THE TOP OF THE INNER CORE TO THE TOP OF THE MAIN CORE BEING SUBSTANTIALLY GREATER THAN THE DISTANCE FROM THE BOTTOM OF THE INNER CORE TO THE BOTTOM OF THE MAIN CORE; AND (C) FEED MEANS AT THE BOTTOM OF THE MAIN CORE FOR PASSAGE OF ADDITIONAL DILUENT GAS THEREINTO AND UPWARDLY THROUGH THE ANNULAR PASSAGE SUPERHEAT ZONE AND FROM THE TOP OF THE MAIN CORE INTO THE VAPORIZED MIXTURE WHEREBY THE ENTIRE SUPERHEATED MIXTURE THUS FORMED PASSED DOWNWARDLY THROUGH THE ANNULAR PASSAGE REACTION ZONE AND THEREFROM.
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) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |