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Patent US2017557A successfully refreshed from Google Patents.
US2017557A
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Recovery of molybdenum
Assignee: IG Farbenindustrie AG
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Filing: 1933-04-18
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Granted: 1935-10-15
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Expires: 1953-04-18
Abstract
No abstract record available.
Inventors
- 👤 Winkler Karl
- 👤 Kroenig Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:28
CPC Classifications
C; C01; C01G; C01G39/00; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/28; C01G29/00; C01G29/006
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) | 1938-10-14 | 1939-04-15 | 1939-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-10-14 | 1943-04-15 | 1943-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-10-14 | 1947-04-15 | 1947-10-15 | $7700.00 | Window Closed / Lapsed |