Patent US3284351A successfully refreshed from Google Patents.
US3284351A
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Water purification method
Assignee: ChampionX LLC
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Filing: 1963-07-15
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Granted: 1966-11-08
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Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 Mahmoud T Dajani
- 👤 Ralph B Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:32
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/58; C02F1/62; C02F1/64; C02F1/645; C02F1/72; C02F1/725
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A METHOD FOR PURIFYING IRON-BEARING WATERS INTENDED FOR CONSUMER USE WHICH COMPRISES THE STEPS OF CONTACTING SAID WATER CONTAINING AT LEAST FERROUS IONS, WITH A METAL PHTHALOCYANINE CATALYST IN PRESENCE OF AN OXIDIZING AGENT, WHEREBY SAID FERROUS IONS ARE OXIDIZED TO FERRIC IONS, AND REMOVING THE FERRIC IONS FROM SAID WATER AS WATER-INSOLUBLE PRECIPITATE.
Claim 2
Independent Claim
54 words
A METHOD FOR PURIFYING IRON-BEARING WATERS INTENDED FOR CONSUMER USE WHICH COMPRISES THE STEPS OF CONTACTING SAID WATER CONTAINING AT LEAST FERROUS IONS, WITH A METAL PHTHALOCYANINE CATALYST IN PRESENCE OF AN OXIDIZING AGENT, WHEREBY SAID FERROUS IONS ARE OXIDIZED TO FERRIC IONS, AND REMOVING THE FERRIC IONS FROM SAID WATER AS WATER-INSOLUBLE PRECIPITATE.
References Cited (Backward Citations)
US3078224A
Cited
US3029201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |