Patent US2967894A successfully refreshed from Google Patents.
US2967894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of aromatic fluorocarbons
Assignee: Individual
•
Filing: 1959-08-13
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Granted: 1961-01-10
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Expires: 1979-08-13
Abstract
No abstract record available.
Inventors
- 👤 Walter J Pummer
- 👤 Leo A Wall
- 👤 Roland E Florin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:55
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/361
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A METHOD WHICH COMPRISES THE VAPOR PHASE HYDROLYSIS OF A SUBSTITUTED TOLUENE SELECTED FROM THE GROUP CONSISTING OF FLUORINATED TOLUENES AND CHLOROFLUORO TOLUENES CONTAINING A TRIFLUOROMETHYL GROUP WITH STEAM IN THE PRESENCE OF AN ALUMINA CATALYST AND RECOVERING THE HYDROLYZED AND DECARBOXYLATED COMPOUNDS.
Claim 2
Independent Claim
43 words
A METHOD WHICH COMPRISES THE VAPOR PHASE HYDROLYSIS OF A SUBSTITUTED TOLUENE SELECTED FROM THE GROUP CONSISTING OF FLUORINATED TOLUENES AND CHLOROFLUORO TOLUENES CONTAINING A TRIFLUOROMETHYL GROUP WITH STEAM IN THE PRESENCE OF AN ALUMINA CATALYST AND RECOVERING THE HYDROLYZED AND DECARBOXYLATED COMPOUNDS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |