US2807582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for water treatment
Assignee: Cochrane Corp
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Filing: 1954-04-05
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Granted: 1957-09-24
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Expires: 1974-04-05
Abstract
No abstract record available.
Inventors
- 👤 Samuel B Applebaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:12
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42; B; B01; B01J; B01J39/00; B01J39/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
IN APPARATUS FOR TREATING WATER TO REDUCE ITS SILICIA CONTENT AND ITS POSSIBLE CONTENT OF CONSTITUENTS OF THE GROUP CALCIUM, MAGNESIUM, AND CARBONIC ACID COMPRISING A FIRST ION EXCHANGE UNIT CONTAINING SODIUM ZEOLITE, A SECOND ION EXCHANGE UNIT CONTAINING HYDROGEN ZEOLITE, MEANS FOR DIRECTING INTO SAID UNITS PROPORTIONED QUANTITIES OF WATER UNDERGOING TREATMENT, AND MEANS FOR COMBINING THE EFFUENTS FROM SAID UNITS, THE IMPROVEMENTS COMPRISING MEANS FOR REMOVING FREE CARBON DIOXIDE FROM THE COMBINED EFFUENT, A THIRD ION EXCHANGE UNIT CONTAINING AN HYDROXYL ION EXCHANGER, MEANS FOR DIRECTING THE DECARBONATED EFFUENT TO SAID THIRD UNIT, AND MEANS SUPPLYING ACID TO THE EFFUENT FROM SAID THIRD UNIT.
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) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |