US2549609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of fluorinated hydrocarbons by distillation with hydrogen fluoride
Assignee: Individual
•
Filing: 1944-10-27
•
Granted: 1951-04-17
•
Expires: 1964-10-27
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:31
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/383; C07C17/386
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
THE METHOD OF SEPARATING A MIXTURE OF FLUORINATED HYDROCARBONS HAVING THE SAME CARBON SKELETON CONTAINING FROM FIVE TO TWELVE CARBON ATOMS BUT DIFFERING FROM ONE ANOTHER IN THE RELATIVE NUMBERS OF HYDROGEN AND FLUORINE ATOMS IN THE MOLECULE, WHICH COMPRISES SUBJECTING THE MIXTURE TO FRACTIONATION IN ADMIXTURE WITH SUFFICIENT HYDROGEN FLUORIDE TO PROVIDE AN OVERHEAD PRODUCT COMPRISING A HYDROGEN FLUORIDE LIQUID PHASE.
Claim 2
Independent Claim
62 words
THE METHOD OF SEPARATING A MIXTURE OF FLUORINATED HYDROCARBONS HAVING THE SAME CARBON SKELETON CONTAINING FROM FIVE TO TWELVE CARBON ATOMS BUT DIFFERING FROM ONE ANOTHER IN THE RELATIVE NUMBERS OF HYDROGEN AND FLUORINE ATOMS IN THE MOLECULE, WHICH COMPRISES SUBJECTING THE MIXTURE TO FRACTIONATION IN ADMIXTURE WITH SUFFICIENT HYDROGEN FLUORIDE TO PROVIDE AN OVERHEAD PRODUCT COMPRISING A HYDROGEN FLUORIDE LIQUID PHASE.
References Cited (Backward Citations)
US2013050A
Cited
US2220713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |