US3222277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of iron from water
Assignee: Pittsburgh Activated Carbon Co
•
Filing: 1964-09-28
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Granted: 1965-12-07
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Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Ronald S Joyce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:54
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/58; C02F1/62; C02F1/64; B; B21; B21D; B21D26/00; B21D26/02; B21D26/06; B21D26/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A PROCESS OF REMOVING DISSOLVED IRON FROM WATER CONTAINING THE SAME COMPRISING PASSING THE WATER THROUGH ACTIVATED CARBON PARTICLES IMPREGNATED WITH MANGANESE DIOXIDE WHICH HAS BEEN FORMED IN SITU.
Claim 2
Dependent Claim
29 words
A PROCESS OF REMOVING DISSOLVED IRON FROM WATER CONTAINING THE SAME COMPRISING PASSING THE WATER THROUGH ACTIVATED CARBON PARTICLES IMPREGNATED WITH MANGANESE DIOXIDE WHICH HAS BEEN FORMED IN SITU.
References Cited (Backward Citations)
US2145901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |