US2846290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slurry process for the manufacture of hydrogen fluoride
Assignee: EIDP Inc
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Filing: 1955-11-28
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Granted: 1958-08-05
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Expires: 1975-11-28
Abstract
No abstract record available.
Inventors
- 👤 Yacoe Jesse Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:34
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/19; C01B7/191; C01B7/192
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR PREPARING HYDROGEN FLUORIDE WHEREIN SULFURIC ACID HAVING A CONCENTRATION OF AT LEAST 90% IS REACTED WITH APPROXIMATELY A STOICHIOMETRIC QUANTITY OF A REACTANT TAKEN FROM THE GROUP CONSISTING OF ALKALIMETAL FLUORIDES AND ALKALINE-EARTH-METAL FLUORIDES IN THE PRESENCE OF CHLORINATED BENZENE AS A DILUENT, AT LEAST 0.67 PART DILUENT BEING PRESENT FOR EACH PART OF METAL SULFATE FORMED, THE REACTION TEMPERATURE BEING MAINTAINED WITHIN THE RANGE OF 100* TO 200*C. AND HYDROGEN FLUORIDE RECOVERED FROM THE GASEOUS PRODUCT STREAM.
Claim 2
Dependent Claim
81 words
A PROCESS FOR PREPARING HYDROGEN FLUORIDE WHEREIN SULFURIC ACID HAVING A CONCENTRATION OF AT LEAST 90% IS REACTED WITH APPROXIMATELY A STOICHIOMETRIC QUANTITY OF A REACTANT TAKEN FROM THE GROUP CONSISTING OF ALKALIMETAL FLUORIDES AND ALKALINE-EARTH-METAL FLUORIDES IN THE PRESENCE OF CHLORINATED BENZENE AS A DILUENT, AT LEAST 0.67 PART DILUENT BEING PRESENT FOR EACH PART OF METAL SULFATE FORMED, THE REACTION TEMPERATURE BEING MAINTAINED WITHIN THE RANGE OF 100* TO 200*C. AND HYDROGEN FLUORIDE RECOVERED FROM THE GASEOUS PRODUCT STREAM.
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) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |