US2409372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of organic fluorine
Assignee: Phillips Petroleum Co
•
Filing: 1944-01-03
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Granted: 1946-10-15
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Expires: 1964-01-03
Abstract
No abstract record available.
Inventors
- 👤 Maryan P Matuszak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C07; C07C; C07C15/00; C07C15/02
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) | 1949-10-14 | 1950-04-15 | 1950-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-10-14 | 1954-04-15 | 1954-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-10-14 | 1958-04-15 | 1958-10-15 | $7700.00 | Window Closed / Lapsed |