Patent US2942947A successfully refreshed from Google Patents.
US2942947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of perchloryl fluoride
Assignee: Pennwalt Corp
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Filing: 1956-12-05
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Granted: 1960-06-28
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Expires: 1976-12-05
Abstract
No abstract record available.
Inventors
- 👤 Engelbrecht Alfred Ferdinand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:42
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/24; C01B11/00; C01B11/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A PROCESS FOR THE PREPARATION OF AN INORGANIC FLUORINE DERIVATIVE OF PERCHLORIC ACID WHICH COMPRISES REACTING AN INORGANIC PERCHLORATE WITH ANTIMONY PENTAFLOURIDE.
Claim 2
Dependent Claim
22 words
A PROCESS FOR THE PREPARATION OF AN INORGANIC FLUORINE DERIVATIVE OF PERCHLORIC ACID WHICH COMPRISES REACTING AN INORGANIC PERCHLORATE WITH ANTIMONY PENTAFLOURIDE.
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) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |