US3600128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for iron removal from zinc chloride solutions
Assignee: EIDP Inc
•
Filing: 1969-02-18
•
Granted: 1971-08-17
•
Expires: 1989-02-18
Abstract
Abstract THIS SPECIFICATION DISCLOSES A PROCESS FOR REMOVING IRON COMPOUNDS FROM A ZINC CHLORIDE SOLUTION CONTAINING DISSOLVED THEREIN SMALL QUANTITIES OF ORGANIC MATTER BY FIRST CONTACTING THE SOLUTION OF ACTIVATED CARBON AND THEREAFTER ADDING AN OXIDIZER TO PRECIPITATE THE IRON OUT OF SOLUTION. THE ACTIVATED CARBON AND IRON SOLIDS ARE REMOVED EITHER BY FILTRATION OR BY OTHER CONVENTIONAL TECHNIQUES SUCH AS SETTLING OR CENTRIFUGING. THE PROCESS IMPROVES THE FILTRATION RATE.
Inventors
- 👤 William A Schulze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:21
CPC Classifications
C; C01; C01G; C01G9/00; C01G9/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |