Patent US3426009A successfully refreshed from Google Patents.
US3426009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of organic fluorine compounds
Assignee: Imperial Chemical Industries Ltd
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Filing: 1967-10-27
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Granted: 1969-02-04
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Expires: 1987-10-27
Abstract
No abstract record available.
Inventors
- 👤 James Chapman
- 👤 David Christopher Horner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:58
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/013; C07C17/04; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; C07C17/093; C07C17/10; C07C17/20; C07C17/202; C07C17/206; C07C17/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |