US2591096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen fluoride recovery
Assignee: ExxonMobil Oil Corp
•
Filing: 1950-05-08
•
Granted: 1952-04-01
•
Expires: 1970-05-08
Abstract
No abstract record available.
Inventors
- 👤 Joe E Penick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:11
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/19; C01B7/191
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR THE RECOVERY OF HYDROGEN FLUORIDE FROM AN ANHYDROUS MIXTURE OF HYDROGEN FLUORIDE AND A FLUID SUBSTANTIALLY CHEMICALLY INERT TO HYDROGEN FLUORIDE AND ACETONITRILE, WHICH COMPRISES: CONTACTING SAID MIXTURE WITH A HYDROGEN FLUORIDE-ACETONITRILE COMPLEX, WHEREBY HYDROGEN FLUORIDE PRESENT IN SAID MIXTURE IS SELECTIVELY ABSORBED BY THE COMPLEX; AND REMOVING ABSORBED HYDROGEN FLUORIDE FROM SAID COMPLEX.
Claim 2
Dependent Claim
57 words
A PROCESS FOR THE RECOVERY OF HYDROGEN FLUORIDE FROM AN ANHYDROUS MIXTURE OF HYDROGEN FLUORIDE AND A FLUID SUBSTANTIALLY CHEMICALLY INERT TO HYDROGEN FLUORIDE AND ACETONITRILE, WHICH COMPRISES: CONTACTING SAID MIXTURE WITH A HYDROGEN FLUORIDE-ACETONITRILE COMPLEX, WHEREBY HYDROGEN FLUORIDE PRESENT IN SAID MIXTURE IS SELECTIVELY ABSORBED BY THE COMPLEX; AND REMOVING ABSORBED HYDROGEN FLUORIDE FROM SAID COMPLEX.
References Cited (Backward Citations)
GB400054A
Cited
US2494867A
Cited
US2392048A
Cited
US2379041A
Cited
US2400874A
Cited
US2462739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |