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US3549321A
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Removal of iron from solution
Assignee: RP EVEREADY Inc 123 EGLINTON AVENUE EAST TORONTO ONTARIO CANADA M4P 1J3 A CORP OF CANADA
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Filing: 1968-04-25
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Granted: 1970-12-22
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Expires: 1988-04-25
Abstract
No abstract record available.
Inventors
- 👤 Peter Kenneth Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:59
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/20; C22B3/44; C01; C01G; C01G49/00; C01G49/02; C01G49/06; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S423/00; Y10S423/01; Y10S423/02
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) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |