Patent US4645454A successfully refreshed from Google Patents.
US3224952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for the production of gaseous mixtures containing acetylene and ethylene
Assignee: PRODUITS AZOTES Ste
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Filing: 1962-04-24
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Granted: 1965-12-21
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Expires: 1982-04-24
Abstract
No abstract record available.
Inventors
- 👤 Vialaron Andre Claude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:22
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/02; C10; C10G; C10G15/00; C10G15/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
METHOD OF PRODUCTION OF GASEOUS MIXTGURES CONTAINING ACETYLENE AND ETHYLENE STARTING FROM A LIQUID HYDROCARBON, WHICH CONSISTS IN PRODUCING AN ELECTRIC ARC BETWEEN TWO ELECTRODES IN THE MIDST OF THE SAID LIQUID HYDROCARBON, INTERRUPTING SAID ARC AND THEN RESTORING SAID ELECTRIC ARC AT A PREDETERMINED CYCLE FREQUENCY BY IMPARTING TO AT LEAST ONE OF SAID ELECTRODES A POSITIVE PERIODIC ALTERNATING MOVEMENT WHICH BRINGS SAID ELECTRODES INTO CONTACT FOR THE PURPOSE OF STRIKING SAID ELECTRIC ARC AND DRAWS SAID ELECTRODES APART FOR THE PURPOSE OF INTERRUPTING SAID ELECTRIC ARC, EACH OF SAID CYCLES COMPRISING A POSITIVE PERIODIC INTERRUPTION AND A PASSGE OF SAID ELECTRIC ARC HAVING A MAXIMUM TIME-DURATION OF ONE SECOND, AND THE RELATIVE MOVEMENT OF SAID ELECTRODES
Claim 2
Dependent Claim
118 words
METHOD OF PRODUCTION OF GASEOUS MIXTGURES CONTAINING ACETYLENE AND ETHYLENE STARTING FROM A LIQUID HYDROCARBON, WHICH CONSISTS IN PRODUCING AN ELECTRIC ARC BETWEEN TWO ELECTRODES IN THE MIDST OF THE SAID LIQUID HYDROCARBON, INTERRUPTING SAID ARC AND THEN RESTORING SAID ELECTRIC ARC AT A PREDETERMINED CYCLE FREQUENCY BY IMPARTING TO AT LEAST ONE OF SAID ELECTRODES A POSITIVE PERIODIC ALTERNATING MOVEMENT WHICH BRINGS SAID ELECTRODES INTO CONTACT FOR THE PURPOSE OF STRIKING SAID ELECTRIC ARC AND DRAWS SAID ELECTRODES APART FOR THE PURPOSE OF INTERRUPTING SAID ELECTRIC ARC, EACH OF SAID CYCLES COMPRISING A POSITIVE PERIODIC INTERRUPTION AND A PASSGE OF SAID ELECTRIC ARC HAVING A MAXIMUM TIME-DURATION OF ONE SECOND, AND THE RELATIVE MOVEMENT OF SAID ELECTRODES
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |