Patent US2500214A successfully refreshed from Google Patents.
Patent US3079444A successfully refreshed from Google Patents.
US3079444A
Expired / Lapsed
US
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Method of preparing halogen-substituted aliphatic hydrocarbons
Assignee: Knapsack AG
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Filing: 1958-12-01
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Granted: 1963-02-26
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Expires: 1978-12-01
Abstract
No abstract record available.
Inventors
- 👤 Jacobowsky Armin
- 👤 Koln Bezirk
- 👤 Sennewald Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:47
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/013; C07C17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR PRODUCING TRASN-1,2-DICHLOROALKENE WHICH COMPRISES INTRODUCING AN UNSATURATED ALIPHATIC HYDROCARBON HAVING AT LEAST ONE TRIPLE BOND INTO A SOLUTION CONSISTING OF CUPROUS CHLORIDE, CUPRIC CHLORIDE, AND ABOUT 2.5 TO ABOUT 20% OF HYDROGEN CHLORIDE, THE MOLAR RATIO OF CUPROUS CHLORIDE TO CUPRIC CHLORIDE BEING AT LEAST 1:1, SAID SOLUTION HAVING A MOL TOTAL COPPER CONTENT OF 1.3 TO 5 MOL PER LITER OF CONTACT SOLUTION, SAID SOLUTION BEING MAINTAINED A TEMPERATURE OF ABOUT 60 TO 150* C., AND RECOVERING RESULTING TRANS-1,2-DICHLOROALKENE.
Claim 2
Dependent Claim
83 words
A PROCESS FOR PRODUCING TRASN-1,2-DICHLOROALKENE WHICH COMPRISES INTRODUCING AN UNSATURATED ALIPHATIC HYDROCARBON HAVING AT LEAST ONE TRIPLE BOND INTO A SOLUTION CONSISTING OF CUPROUS CHLORIDE, CUPRIC CHLORIDE, AND ABOUT 2.5 TO ABOUT 20% OF HYDROGEN CHLORIDE, THE MOLAR RATIO OF CUPROUS CHLORIDE TO CUPRIC CHLORIDE BEING AT LEAST 1:1, SAID SOLUTION HAVING A MOL TOTAL COPPER CONTENT OF 1.3 TO 5 MOL PER LITER OF CONTACT SOLUTION, SAID SOLUTION BEING MAINTAINED A TEMPERATURE OF ABOUT 60 TO 150* C., AND RECOVERING RESULTING TRANS-1,2-DICHLOROALKENE.
References Cited (Backward Citations)
US2440997A
Cited
US2809221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |