Patent US3479378A successfully refreshed from Google Patents.
US3479378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid ion exchange process for metal recovery
Assignee: Bunker Hill Co
•
Filing: 1967-11-06
•
Granted: 1969-11-18
•
Expires: 1987-11-06
Abstract
No abstract record available.
Inventors
- 👤 Bruno Orlandini
- 👤 Kenneth K Kirkpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:58
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0446; B01D11/0457; C; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/30; C22B3/38; C22B3/384; C22B3/3846; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |