Patent US3618295A successfully refreshed from Google Patents.
US3618295A
Expired / Lapsed
US
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Process for the separation of cyanogen chloride and hydrogen chloride
Assignee: Evonik Operations GmbH
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Filing: 1969-11-14
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Granted: 1971-11-09
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Expires: 1989-11-14
Abstract
Abstract A MIXTURE OF CYANOGEN CHLORIDE AND HYDROGEN CHLORIDE IS SEPARATED BY MEANS OF ORGANIC LIQUID IN WHICH THE CYANOGEN CHLORIDE IS ABSORBED BUT IN WHICH THE HYDROGEN CHLORIDE IS INSOLUBLE.
Inventors
- 👤 Friedhelm Geiger
- 👤 Theodor Lussling
- 👤 Wolfgang Weigert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:20
CPC Classifications
C; C01; C01C; C01C3/00; C01C3/004; B; B01; B01D; B01D53/00; B01D53/14; C01B; C01B7/00; C01B7/01
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |