Patent US2732853A successfully refreshed from Google Patents.
Patent US3453337A successfully refreshed from Google Patents.
US3453337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorination of halogenated organic compounds
Assignee: Imperial Smelting Corp Ltd
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Filing: 1965-02-19
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Granted: 1969-07-01
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Expires: 1985-02-19
Abstract
No abstract record available.
Inventors
- 👤 Royston Henry Bennett
- 👤 David Walter Cottrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:16
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/54; D21H17/56; C; C07; C07B; C07B39/00; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PROCESS FOR THE PRODUCTION OF FLUORINATED BENZENES IN WHICH HEXACHLOROBENZENE IS HEATED IN CONTACT WITH A MIXTURE OF: (A) KF OR NAF, AND (B) AT LEAST ONE FLUORIDE SELECTED FROM THE GROUP CONSISTING OF (I) SBF3, AND (II) A FLUORIDE CONTAINING AN ALKALI METAL AND A NONALKALI METAL MOIETY SELECTED FROM THE GROUP CONSISTING OF BF4, SNF4, SNF6, PF6, TIF6 AND SIF6 AT A TEMPERATURE SUCH THAT HEXACHLOROBENZENE IS IN THE VAPOR PHASE, THE MIXTURE OF FLUORIDES BEING IN THE SOLID STATE DURING THE REACTION, TO PRODUCE A HALOGENOBENZENE CONTAINING A GREATER NUMBER OF FLUORINE ATOMS THAN THE STARTING MATERIAL, THE MAXIMUM MOLAR RATIO OF (B) TO (A) BEING ABOUT .094 TO 1.
Claim 2
Dependent Claim
114 words
A PROCESS FOR THE PRODUCTION OF FLUORINATED BENZENES IN WHICH HEXACHLOROBENZENE IS HEATED IN CONTACT WITH A MIXTURE OF: (A) KF OR NAF, AND (B) AT LEAST ONE FLUORIDE SELECTED FROM THE GROUP CONSISTING OF (I) SBF3, AND (II) A FLUORIDE CONTAINING AN ALKALI METAL AND A NONALKALI METAL MOIETY SELECTED FROM THE GROUP CONSISTING OF BF4, SNF4, SNF6, PF6, TIF6 AND SIF6 AT A TEMPERATURE SUCH THAT HEXACHLOROBENZENE IS IN THE VAPOR PHASE, THE MIXTURE OF FLUORIDES BEING IN THE SOLID STATE DURING THE REACTION, TO PRODUCE A HALOGENOBENZENE CONTAINING A GREATER NUMBER OF FLUORINE ATOMS THAN THE STARTING MATERIAL, THE MAXIMUM MOLAR RATIO OF (B) TO (A) BEING ABOUT .094 TO 1.
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) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |