US2560838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of fluorine compounds
Assignee: Individual
•
Filing: 1947-01-24
•
Granted: 1951-07-17
•
Expires: 1967-01-24
Abstract
No abstract record available.
Inventors
- 👤 Arnold Robert Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:59
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/07; C07C17/087
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN A PROCESS FOR REACTING HYDROGEN FLUORIDE WITH A DIFFICULTLY HYDORFLUORINATED ACYCLIC OLEFIN IN WHICH OLEFIN AT LEAST ONE HALOGEN ATOM IS ATTACHED TO THE OLEFINICALLY-LINKED CARBON ATOMS, THE STEP OF HEATING A MIXTURE OF SUCH HALOGENATED ACYCLIC OLEFIN, HYDROGEN FLUORIDE AND A REACTION-PROMOTING AMOUNT OF BORON TRIFLUORIDE TO A TEMPERATURE BETWEEN ABOUT 30 AND ABOUT 160* C. TILL THE REACTION PROCEEDS RAPIDLY.
Claim 2
Dependent Claim
63 words
IN A PROCESS FOR REACTING HYDROGEN FLUORIDE WITH A DIFFICULTLY HYDORFLUORINATED ACYCLIC OLEFIN IN WHICH OLEFIN AT LEAST ONE HALOGEN ATOM IS ATTACHED TO THE OLEFINICALLY-LINKED CARBON ATOMS, THE STEP OF HEATING A MIXTURE OF SUCH HALOGENATED ACYCLIC OLEFIN, HYDROGEN FLUORIDE AND A REACTION-PROMOTING AMOUNT OF BORON TRIFLUORIDE TO A TEMPERATURE BETWEEN ABOUT 30 AND ABOUT 160* C. TILL THE REACTION PROCEEDS RAPIDLY.
References Cited (Backward Citations)
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Cited
US2118901A
Cited
US2364818A
Cited
US2399024A
Cited
US2462359A
Cited
US2425991A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |