US3455677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovering copper and molybdenum from ore concentrates
Assignee: US TUNGSTEN Corp A CORP OF
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Filing: 1967-04-27
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Granted: 1969-07-15
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Expires: 1987-04-27
Abstract
No abstract record available.
Inventors
- 👤 John E Litz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:20
CPC Classifications
C; C01; C01G; C01G39/00; C01G39/003; C22; C22B; C22B1/00; C22B1/02; C22B1/10; C22B15/00; C22B15/0002; C22B15/001; C22B15/0013; C22B15/0015; C22B15/0063; C22B15/0065; C22B15/0067; C22B15/0071; C22B3/00; C22B3/20; C22B3/26; C22B3/28; C22B3/282; C22B34/00; C22B34/30; C22B34/34; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |