Patent US3657375A successfully refreshed from Google Patents.
US3657375A
Expired / Lapsed
US
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Production of acetylene
Assignee: BASF SE
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Filing: 1970-02-16
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Granted: 1972-04-18
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Expires: 1990-02-16
Abstract
Abstract PRODUCTION OF PURE ACETYLENE FROM CRACKED GAS, OBTAINED BY CRACKING LIQUID HYDROCARBONS BY, IN PARTICULAR, THE SUBMERGED-FLAME PROCESS, BY COMBINING A NUMBER OF PROCESS STAGES, IN WHICH THE C2 TO C5 HYDROCARBONS CONTAINED IN THE CRUDE ACETYLENE ARE WASHED OUT WITH AN ORGANIC SOLVENT SUCH AS TOLUENE.
Inventors
- 👤 Erwin Brunner
- 👤 Rolf Platz
- 👤 Kurt Taglieber
- 👤 Kurt Weinfurter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:38
CPC Classifications
C; C07; C07C; C07C11/00; C07C11/22; C07C11/24; C07C7/00; C07C7/005; C07C7/11; C10; C10G; C10G9/00; C10G9/34; C10G9/36; C10G9/38; Y; Y02; Y02P; Y02P30/00; Y02P30/40; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |