US2915565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing vinylidene halide
Assignee: Knapsack AG
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Filing: 1954-09-21
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Granted: 1959-12-01
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Expires: 1974-09-21
Abstract
No abstract record available.
Inventors
- 👤 Jacobowsky Armin
- 👤 Sennewald Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:34
CPC Classifications
C; C07; C07C; C07C17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A PROCESS FOR DIRECTLY CONVERTING ACETYLENE TO VINYLIDENE HALIDE WHICH COMPRISES REACTING THE ACETYLENE AT A TEMPERATURE OF ABOUT 60 TO ABOUT 120*C. AND A PRESSURE OF ABOUT 100 MILLIMETERS OF MERCURY TO ABOUT 2.5 ATMOSPHERES WITH AN AQUEOUS SOLUTION OF CUPROUS HALIDE, CUPRIC HALIDE, HYDROGEN HALIDE AND A SUPPLEMENTAL HALIDE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HALIDE, ALKALINE EARTH METAL HALIDE AND AMMONIUM HALIDE, THE HALOGEN OF SAID HALIDES HAVING AN ATOMIC WEIGHT OF AT LEAST 35 BUT NOT MORE THAN 80, THE HYDROGEN HALIDE CONTENT OF SAID SOLUTION BEING BETWEEN ABOUT 0.58 AND ABOUT 2.9 MOLS PER LITER, THE MOLAR RATIO OF CUPROUS TO CUPRIC HALIDE BEING FROM ABOUT 4:1 TO ABOUT 9:1 AND THE MOLAR RATIO OF THE TOTAL COPPER HALIDES TO THE SUPPLEMENTAL HALIDE BEING BETWEEN ANOUT 1:0.8 AND ABOUT 1:1,5.
Claim 2
Dependent Claim
137 words
A PROCESS FOR DIRECTLY CONVERTING ACETYLENE TO VINYLIDENE HALIDE WHICH COMPRISES REACTING THE ACETYLENE AT A TEMPERATURE OF ABOUT 60 TO ABOUT 120*C. AND A PRESSURE OF ABOUT 100 MILLIMETERS OF MERCURY TO ABOUT 2.5 ATMOSPHERES WITH AN AQUEOUS SOLUTION OF CUPROUS HALIDE, CUPRIC HALIDE, HYDROGEN HALIDE AND A SUPPLEMENTAL HALIDE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HALIDE, ALKALINE EARTH METAL HALIDE AND AMMONIUM HALIDE, THE HALOGEN OF SAID HALIDES HAVING AN ATOMIC WEIGHT OF AT LEAST 35 BUT NOT MORE THAN 80, THE HYDROGEN HALIDE CONTENT OF SAID SOLUTION BEING BETWEEN ABOUT 0.58 AND ABOUT 2.9 MOLS PER LITER, THE MOLAR RATIO OF CUPROUS TO CUPRIC HALIDE BEING FROM ABOUT 4:1 TO ABOUT 9:1 AND THE MOLAR RATIO OF THE TOTAL COPPER HALIDES TO THE SUPPLEMENTAL HALIDE BEING BETWEEN ANOUT 1:0.8 AND ABOUT 1:1,5.
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) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |