Patent US3265746A successfully refreshed from Google Patents.
US3265746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making perfluorostyrene
Assignee: Individual
•
Filing: 1962-01-18
•
Granted: 1966-08-09
•
Expires: 1982-01-18
Abstract
No abstract record available.
Inventors
- 👤 Leo A Wall
- 👤 Joseph M Antonucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:30
CPC Classifications
C; C07; C07C; C07C25/00; C07C25/24; C07C25/28; C07C17/00; C07C17/093; C07C17/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
THE METHOD OF MAKING PERFLUOROSTYRENE WHICH COMPRISES REACTING THE GRIGNARD REAGENT C6F5MGRB OF PENTAFLUOROBROMOBENZENE WITH TRIFLUOROACETALDEHYDE AND DECOMPOSING THE REACTION PRODUUCT THEREOF WITH ACIDULATED WATER TO PRODUCE PENTAFLUOROPHENYLTRIFLUOROMETHYL CARBINOL; REACTING THE PENTAFLUOROPHENYLTRIFLUOROMETHYL CARBINOL WITH SULFUR TETRAFLUORIDE TO PRODUCE B,B,B-TRIFLUORO-AFLUOROETHYLPENTAFLUOROBENZENE; AND PYROLYZING SAID LASTNAMED COMPOUND IN THE PRESENCE OF IRON.
Claim 2
Independent Claim
49 words
THE METHOD OF MAKING PERFLUOROSTYRENE WHICH COMPRISES REACTING THE GRIGNARD REAGENT C6F5MGRB OF PENTAFLUOROBROMOBENZENE WITH TRIFLUOROACETALDEHYDE AND DECOMPOSING THE REACTION PRODUUCT THEREOF WITH ACIDULATED WATER TO PRODUCE PENTAFLUOROPHENYLTRIFLUOROMETHYL CARBINOL; REACTING THE PENTAFLUOROPHENYLTRIFLUOROMETHYL CARBINOL WITH SULFUR TETRAFLUORIDE TO PRODUCE B,B,B-TRIFLUORO-AFLUOROETHYLPENTAFLUOROBENZENE; AND PYROLYZING SAID LASTNAMED COMPOUND IN THE PRESENCE OF IRON.
References Cited (Backward Citations)
US2689241A
Cited
US3187058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |