Patent US3270070A successfully refreshed from Google Patents.
US3270070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of hydro-fluoroaromatic compounds
Assignee: Pennwalt Corp
•
Filing: 1964-09-01
•
Granted: 1966-08-30
•
Expires: 1984-09-01
Abstract
No abstract record available.
Inventors
- 👤 Robert N Haszeldine
- 👤 John M Birchall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:58
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/22; C08G77/24; C07; C07C; C07C17/00; C07C17/35; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS FOR THE PREPARATION OF A MONOHYDROPERFLUOROAROMATIC COMPOUND WHEN X IS 1 OR A DIHYDROPERFLUORO AROMATIC COMPOUND WHEN X IS 2, X BEING DEFINED BELOW, WHICH COMPRISES HYDROLYZING WITH THE AID OF STRONG ALKALI IN ADMIXTURE WITH WATER A COMPOUND HAVING THE STRUCTURE ARF(SIFCL2-NRN)X WHERE ARF IS A PERFLUOROARYL RADICAL SELECED FROM THE GROUP CONSISTING OF PERFLUOROPHENYL, PERFLUORONAPHTHYL AND PERFLUOROPYRIDYL, R IS A RADICAL SELECTED FROM THE GROUP OF HYDROGEN, FLUORINE, ALKYL, ARYL, FLUOROALKYL AND FLYOROARYL RADICALS, N IS A NUMBER FROM 0 TO 2, AND X IS A NUMBER FROM 1 TO 2.
Claim 2
Dependent Claim
95 words
A PROCESS FOR THE PREPARATION OF A MONOHYDROPERFLUOROAROMATIC COMPOUND WHEN X IS 1 OR A DIHYDROPERFLUORO AROMATIC COMPOUND WHEN X IS 2, X BEING DEFINED BELOW, WHICH COMPRISES HYDROLYZING WITH THE AID OF STRONG ALKALI IN ADMIXTURE WITH WATER A COMPOUND HAVING THE STRUCTURE ARF(SIFCL2-NRN)X WHERE ARF IS A PERFLUOROARYL RADICAL SELECED FROM THE GROUP CONSISTING OF PERFLUOROPHENYL, PERFLUORONAPHTHYL AND PERFLUOROPYRIDYL, R IS A RADICAL SELECTED FROM THE GROUP OF HYDROGEN, FLUORINE, ALKYL, ARYL, FLUOROALKYL AND FLYOROARYL RADICALS, N IS A NUMBER FROM 0 TO 2, AND X IS A NUMBER FROM 1 TO 2.
References Cited (Backward Citations)
CA534818A
Cited
US2511820A
Cited
US2598436A
Cited
US2636896A
Cited
GB706703A
Cited
US2929830A
Cited
FR1205608A
Cited
US3004077A
Cited
US3000976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |