Patent US2129289A successfully refreshed from Google Patents.
US2129289A
Expired / Lapsed
US
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Manufacture of new fluorine compounds
Assignee: IG Farbenindustrie AG
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Filing: 1935-04-10
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Granted: 1938-09-06
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Expires: 1955-04-10
Abstract
No abstract record available.
Inventors
- 👤 Soll Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:06
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/12; C08C19/14; C01; C01B; C01B7/00; C01B7/19; C01B7/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49758
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) | 1941-09-05 | 1942-03-07 | 1942-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-09-05 | 1946-03-07 | 1946-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-09-05 | 1950-03-07 | 1950-09-06 | $7700.00 | Window Closed / Lapsed |