US3057138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the separation of metals from fluids containing same
Assignee: Engelhard Industries Inc
•
Filing: 1957-10-01
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Granted: 1962-10-09
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Expires: 1977-10-01
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Huxster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:17
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/20; C01B21/24; C01B21/26; C01B21/267; C22; C22B; C22B11/00; C22B11/02; C22B11/021; C22B11/026; C22B11/028; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |