US2838449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for water treating
Assignee: Individual
•
Filing: 1955-07-18
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Granted: 1958-06-10
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Expires: 1975-07-18
Abstract
No abstract record available.
Inventors
- 👤 Robert E Briggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:11
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/008; B; B01; B01J; B01J39/00; B01J39/02; C02F1/28; C02F1/281; C02F1/46; C02F1/4602; F; F24; F24D; F24D19/00; F24D19/0092; C02F1/461; C02F1/46104; C02F1/4618; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/46115; C02F2209/00; C02F2209/06; C02F2303/00; C02F2303/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS FOR TREATING WATER CONTAINING A TOTAL HARDNESS CONTENT IN EXCESS OF ITS BICARBONATE CONTENT, COMPRISING: REPLACING AT LEAST SOME OF THE HARDNESS-PRODUCING CATIONS IN SAID WATER WITH SODIUM IONS BY ION EXCHANGE WITH SODIUM ZEOLITE SO THAT THE BICARBONATE CONTENT OF THE RESULTANT WATER IS AT LEAST EQUAL TO THE REMAINING TOTAL HARDNESS CONTENT OF SAID WATER, AND SUBJECTING SAID TREATED WATER TO ELECTROLYTIC ACTION IN THE CATHODE COMPARTMENT OF AN ELECTROLYTIC CELL TO ALKALIZE SAID WATER AND PRECIPITATE AT LEAST PART OF ANY REMAINING HARDNESS-PRODUCING CATIONS AS CARBONATES.
Claim 2
Dependent Claim
91 words
A PROCESS FOR TREATING WATER CONTAINING A TOTAL HARDNESS CONTENT IN EXCESS OF ITS BICARBONATE CONTENT, COMPRISING: REPLACING AT LEAST SOME OF THE HARDNESS-PRODUCING CATIONS IN SAID WATER WITH SODIUM IONS BY ION EXCHANGE WITH SODIUM ZEOLITE SO THAT THE BICARBONATE CONTENT OF THE RESULTANT WATER IS AT LEAST EQUAL TO THE REMAINING TOTAL HARDNESS CONTENT OF SAID WATER, AND SUBJECTING SAID TREATED WATER TO ELECTROLYTIC ACTION IN THE CATHODE COMPARTMENT OF AN ELECTROLYTIC CELL TO ALKALIZE SAID WATER AND PRECIPITATE AT LEAST PART OF ANY REMAINING HARDNESS-PRODUCING CATIONS AS CARBONATES.
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) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |