Patent US3413367A successfully refreshed from Google Patents.
US3413367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of carbon tetrachloride
Assignee: Imperial Chemical Industries Ltd
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Filing: 1964-01-16
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Granted: 1968-11-26
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Expires: 1984-01-16
Abstract
No abstract record available.
Inventors
- 👤 Kopsch Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:50
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C07; C07C; C07C17/00; C07C17/093; C07C17/18; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A PROCESS FOR THE MANUFACTURE OF CARBON TETRACHLORIDE WHICH COMPRISES BEINGING PHOSGENE INTO INTIMATE CONTACT IN A REACTOR WITH AN UNSUPPORTED CATALYST AT A TEMPERATURE ABOVE THE MELTING POINT OF THE CATALYST, BUT NOT GREATER THAN 500*C. AND AT PRESSURE ABOVE ATMOSPHERIC PRESSURE, SAID CATALYST CONTAINING A CHLORIDE SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN HEXACHLORIDE AND MOLYBDENUM PENTACHLORIDE AND MIXTURES THEREOF, AND WHERE THE CATALYST FURTHER CONTAINS AN OXYCHLORIDE SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN OXYCHLORIDE AND MOLYBDENUM OXYCHLORIDE AND MIXTURES THEREOF, AND WHERE THE CATALYST FURTHER CONTAINS A CHLORIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF IRON AND ALUMINUM, WHEREBY THE OXYCHLORIDE OF THE CATALYST IS MAINTAINED AT LESS THAN 7% BY WEIGHT OF THE CHLORIDE CONTENT OF THE CATALYST.
Claim 2
Dependent Claim
125 words
A PROCESS FOR THE MANUFACTURE OF CARBON TETRACHLORIDE WHICH COMPRISES BEINGING PHOSGENE INTO INTIMATE CONTACT IN A REACTOR WITH AN UNSUPPORTED CATALYST AT A TEMPERATURE ABOVE THE MELTING POINT OF THE CATALYST, BUT NOT GREATER THAN 500*C. AND AT PRESSURE ABOVE ATMOSPHERIC PRESSURE, SAID CATALYST CONTAINING A CHLORIDE SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN HEXACHLORIDE AND MOLYBDENUM PENTACHLORIDE AND MIXTURES THEREOF, AND WHERE THE CATALYST FURTHER CONTAINS AN OXYCHLORIDE SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN OXYCHLORIDE AND MOLYBDENUM OXYCHLORIDE AND MIXTURES THEREOF, AND WHERE THE CATALYST FURTHER CONTAINS A CHLORIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF IRON AND ALUMINUM, WHEREBY THE OXYCHLORIDE OF THE CATALYST IS MAINTAINED AT LESS THAN 7% BY WEIGHT OF THE CHLORIDE CONTENT OF THE CATALYST.
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) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |