US3073769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making acetylene
Assignee: EIDP Inc
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Filing: 1960-07-07
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Granted: 1963-01-15
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Expires: 1980-07-07
Abstract
No abstract record available.
Inventors
- 👤 Doukas George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:42
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/76; C07C2/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
THE PROCESS FOR MAKING ACETYLENE BY THE PYROLYSIS OF A HYDROCARBON IN AN ELECTRIC ARC FURNACE HAVING A CARBON CATHODE IN THE FORM OF A ROUND ROD, A COAXIALLY ALIGNED ELONGATED CYLINDRICAL METAL ANODE, EXTENDING BEYOND THE END OF THE CATHODE AND HAVING AN INTERNAL DIAMETER GREATER THAN THE DIAMETER OF THE CATHODE AND A ROTATING ELECTRIC ARC FORMED FROM THE TIP OF THE CATHODE AND STRIKING THE ANODE IN A ZONE BEYOND THE TIP OF THE CATHODE, WHICH PROCESS COMPRISES PASSING THE HYDROCARBON IN A GASEOUS STREAM UNDER A PRESSURE OF AT LEAST 2 INCHES OF MERCURY ABSOLUTE THROUGH THE FURNACE PAST THE CATHODE TIP THROUGH THE ELECTRIC ARC, EXPOSING THE END PORTION OF THE CATHODE TO THE GASEOUS STREAM OVER A LENGTH CORRESPONDING TO FROM ABOUT 2 TO ABOUT 5 TIMES ITS DIAMETER, STRONGLY COOLING THE SHANK OF THE CATHODE ABOVE SAID END PORTION TO A TEMPERATURE BELOW ABOUT 1100* C., APPLYING A DIRECT ELECTRIC CURRENT TO THE COOLED SHANK OF THE CATHODE TO FORM AND MAINTAIN THE ELECTRIC ARC, ADJUSTING THE STRENGTH OF SAID CURRENT WITHIN THE SAFE CURRENT-CARRYING CAPACITY OF THE CATHODE IN ACCORD WITH THE GAS PRESSURE AND THE DIAMETER OF
Claim 2
Dependent Claim
196 words
THE PROCESS FOR MAKING ACETYLENE BY THE PYROLYSIS OF A HYDROCARBON IN AN ELECTRIC ARC FURNACE HAVING A CARBON CATHODE IN THE FORM OF A ROUND ROD, A COAXIALLY ALIGNED ELONGATED CYLINDRICAL METAL ANODE, EXTENDING BEYOND THE END OF THE CATHODE AND HAVING AN INTERNAL DIAMETER GREATER THAN THE DIAMETER OF THE CATHODE AND A ROTATING ELECTRIC ARC FORMED FROM THE TIP OF THE CATHODE AND STRIKING THE ANODE IN A ZONE BEYOND THE TIP OF THE CATHODE, WHICH PROCESS COMPRISES PASSING THE HYDROCARBON IN A GASEOUS STREAM UNDER A PRESSURE OF AT LEAST 2 INCHES OF MERCURY ABSOLUTE THROUGH THE FURNACE PAST THE CATHODE TIP THROUGH THE ELECTRIC ARC, EXPOSING THE END PORTION OF THE CATHODE TO THE GASEOUS STREAM OVER A LENGTH CORRESPONDING TO FROM ABOUT 2 TO ABOUT 5 TIMES ITS DIAMETER, STRONGLY COOLING THE SHANK OF THE CATHODE ABOVE SAID END PORTION TO A TEMPERATURE BELOW ABOUT 1100* C., APPLYING A DIRECT ELECTRIC CURRENT TO THE COOLED SHANK OF THE CATHODE TO FORM AND MAINTAIN THE ELECTRIC ARC, ADJUSTING THE STRENGTH OF SAID CURRENT WITHIN THE SAFE CURRENT-CARRYING CAPACITY OF THE CATHODE IN ACCORD WITH THE GAS PRESSURE AND THE DIAMETER OF
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |