US2519199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of vinyl fluorides
Assignee: EIDP Inc
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Filing: 1947-03-26
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Granted: 1950-08-15
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Expires: 1967-03-26
Abstract
No abstract record available.
Inventors
- 👤 Salisbury Leroy Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:15
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/07; C07C17/08; B; B01; B01J; B01J23/00; B01J23/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
100 words
A PROCESS FOR THE SYNTHESIS OF A VINYL FLUORIDE WHICH COMPRISES SUBJECTING AN ACETYLENIC HYDROCARBON COMPOUND, IN ADMIXTURE WITH HYDROGEN FLUORIDE, TO CONTACT IN THE VAPOR PHASE WITH A CATALYST COMPOSITION COMPRISING MERCURY OXIDE WHICH IS AT LEAST PARTIALLY COMBINED CHEMICALLY WITH AN OXIDE OF NITROGEN SUPPORTED ON A CARRIER WHICH IS INERT TOWARD SAID ACETYLENIC HYDROCARBON COMPOUND AND HYDROGEN FLUORIDE, SAID CATALYST COMPOSITION BEING THE PRODUCT OBTAINED BY WETTING SAID CARRIER WITH A MERCURY NITRATE SOLUTION AND THEN HEATING THE RESULTING COMPOSITION UNTIL MERCURY APPEARS IN THE EXIT END OF THE REACTION ZONE IN WHICH THE HEATING IS CONDUCTED.
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) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |