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US3424804A
Expired / Lapsed
US
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Preparation of highly fluorinated aromatic compounds
Assignee: Imperial Smelting Corp Ltd
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Filing: 1966-01-03
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Granted: 1969-01-28
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Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Julian Frodo Tilney-Bassett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:26
CPC Classifications
C; C07; C07C; C07C25/00; C07C25/02; C07C25/13; C07C17/00; C07C17/093; C07C17/10; C07C17/12; C07C17/23
Claims Analysis
Total Claims: 0
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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) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |