US2551639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction of olefins and halogenated alkanes
Assignee: ExxonMobil Oil Corp
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Filing: 1947-07-22
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Granted: 1951-05-08
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Expires: 1967-07-22
Abstract
No abstract record available.
Inventors
- 👤 Charles F Feasley
- 👤 William A Stover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:05
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/263; C07C17/266; C07C17/272; C07C17/275
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
79 words
THE METHOD FOR CONDENSING AN OLEFINIC HYDROCARBON, ALL CARBONS OF WHICH ARE IN ALIPHATIC GROUPS, WITH A HALOGENATED ALKANE, THE HALOGEN ATOMS OF WHICH ARE SELECTED FROM THE GROUP CONSISTING OF FLUORINE AND CHLORINE, TO FORM AN UNSATURATED MONOMER, WHICH COMPRISES: CONTACTING SAID HYDROCARBON WITH SAID ALKANE, IN THE ABSENCE OF A CATALYST, AT A TEMPERATURE BETWEEN ABOUT 150* C. AND ABOUT ABOUT 350* C. AND AT A PRESSURE SUFFICIENT TO MAINTAIN THE REACTANTS IN A SUBSTANTIALLY LIQUID STATE.
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) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |