US1923652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of molybdenum
Assignee: IG Farbenindustrie AG
•
Filing: 1930-08-27
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Granted: 1933-08-22
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Expires: 1950-08-27
Abstract
No abstract record available.
Inventors
- 👤 Winkler Karl
- 👤 Kroenig Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:01
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/28; C; C01; C01G; C01G39/00; C01G39/02; C22; C22B; C22B34/00; C22B34/30; C22B34/34; C22B7/00; C22B7/006; C22B7/008; C22B7/009; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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) | 1936-08-21 | 1937-02-20 | 1937-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-08-21 | 1941-02-20 | 1941-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-08-21 | 1945-02-20 | 1945-08-22 | $7700.00 | Window Closed / Lapsed |