US3488185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation and recovery of zinc from solutions containing zinc ions and other metal ions
Assignee: ChampionX LLC
•
Filing: 1967-06-02
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Granted: 1970-01-06
•
Expires: 1987-06-02
Abstract
No abstract record available.
Inventors
- 👤 Alfred W Oberhofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:36
CPC Classifications
C; C01; C01G; C01G9/00; C01G9/003; C22; C22B; C22B3/00; C22B3/20; C22B3/42; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2962351A
Cited
US3076032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |