US2966392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the separation and purification of acetylene from gases obtained by pyrolysis of hydrocarbons
Assignee: Societe Belge de lAzote et des Produits Chimiques du Marly SA
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Filing: 1958-10-10
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Granted: 1960-12-27
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Expires: 1978-10-10
Abstract
No abstract record available.
Inventors
- 👤 Braconier Frederic Fran Albert
- 👤 Riga Jean Joseph Lamber Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:51
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
IN A PROCESS FOR THE SEPARATION AND PURIFICATION OF ACETYLENE FROM A MIXTURE OF GASES OBTAINED BY PYROLYSIS OF HYDROCARBONS WHEREIN THE PYROLYSIS GAS IS CONTACTED WITH LIQUID AMMONIA FOR SELECTIVE DISSOLUTION OF ACETYLENIC GASES CONTAINED IN SAID GAS MIXTURE, THEREBY LEAVING A RESIDUE OF COOLED UNDISSOLVED GASES, THE IMPROVEMENT WHICH COMPRISES SCRUBBING SAID PYROLYSIS GAS MIXTURE WITH A LOW MELTING SELECTIVE SOLVENT FOR AROMATIC HYDROCARBONS AND ACETYLENE HOMOLOGUES CONTAINED IN SAID PYROLYSIS GAS PRIOR TO SAID CONTACT WITH LIQUID AMMONIA AND SELECTED FROM THE GROUP CONSISTING OF METHANOL, ACETONE, DIMETHYLFORMAMIDE, BUTYROLACTONE, AND MIXTURES THEREOF.
References Cited (Backward Citations)
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Cited
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Cited
US2236964A
Cited
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Cited
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Cited
US2856258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |