US2574480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofluorination of acetylenic hydrocarbons
Assignee: Phillips Petroleum Co
•
Filing: 1948-11-26
•
Granted: 1951-11-13
•
Expires: 1968-11-26
Abstract
No abstract record available.
Inventors
- 👤 John C Hillyer
- 👤 Joseph F Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:16
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/07; C07C17/08; B; B01; B01J; B01J27/00; B01J27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
THE PROCESS WHICH COMPRISES REACTING AN ACETYLENIC HYDROCARBON WITH HYDROGEN FLUORIDE, EMPLOYED IN A MOLAR RATIO OF ACETYLENIC HYDROCARBON TO HYDROGEN FLUORIDE WITHIN THE RANGE OF 1.1 TO 1:4, AT A TEMPERATURE WITHIN THE RANGE OF 350 TO 750* F. AND IN THE PRESENCE OF A CATALYST COMPRISING FROM 70 TO 95 WEIGHT PER CENT ALUMINA AND FROM 5 TO 30 WEIGHT PER CENT ZNF2, AND RECOVERING HYDROFLUORINATED PRODUCTS THUS PRODUCED.
Claim 2
Dependent Claim
71 words
THE PROCESS WHICH COMPRISES REACTING AN ACETYLENIC HYDROCARBON WITH HYDROGEN FLUORIDE, EMPLOYED IN A MOLAR RATIO OF ACETYLENIC HYDROCARBON TO HYDROGEN FLUORIDE WITHIN THE RANGE OF 1.1 TO 1:4, AT A TEMPERATURE WITHIN THE RANGE OF 350 TO 750* F. AND IN THE PRESENCE OF A CATALYST COMPRISING FROM 70 TO 95 WEIGHT PER CENT ALUMINA AND FROM 5 TO 30 WEIGHT PER CENT ZNF2, AND RECOVERING HYDROFLUORINATED PRODUCTS THUS PRODUCED.
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) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |