US2643226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water fluoridation and impurity coagulation
Assignee: Ozark-Mahoning Co
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Filing: 1950-06-10
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Granted: 1953-06-23
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Expires: 1970-06-10
Abstract
No abstract record available.
Inventors
- 👤 Wayne E White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:41
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/76; C02F1/766
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE METHOD OF TREATING WATER SUPPLIES OF MUNICIPALITIES WHICH CONSISTS OF SUPPLYING THERETO A WATER SOLUBLE FINELY PULVERULENT MATERIAL CONTAINING THE ALUMINUM AND FLUORINE BEARING REACTION PRODUCT ALFSO4 OF CALCIUM FLUORIDE AND A SOLUTION OF ALUMINUM SULFATE ADAPTED WHEN DISSOLVED IN THE WATER UNDER CONDITIONS OF SUFFICIENT ALKALINITY THEREIN FOR COAGULATION TO RELEASE THERETO FLUORINE AND ALUMINUM THEREBY TO FLUORIDATE THE WATER IN AMOUNT NOT IN EXCESS OF 2.5 PARTS OF FLUORINE PER MILLION PARTS OF WATER AND TO SUPPLY THE ALUMINUM COMPONENT OF A SUBSEQUENTLY FORMED FLOCCULENT PRECIPITATE FOR ENTRAINING SUSPENDED MINERAL MATTER INITIALLY CONTAINED IN THE WATER.
Claim 2
Independent Claim
99 words
THE METHOD OF TREATING WATER SUPPLIES OF MUNICIPALITIES WHICH CONSISTS OF SUPPLYING THERETO A WATER SOLUBLE FINELY PULVERULENT MATERIAL CONTAINING THE ALUMINUM AND FLUORINE BEARING REACTION PRODUCT ALFSO4 OF CALCIUM FLUORIDE AND A SOLUTION OF ALUMINUM SULFATE ADAPTED WHEN DISSOLVED IN THE WATER UNDER CONDITIONS OF SUFFICIENT ALKALINITY THEREIN FOR COAGULATION TO RELEASE THERETO FLUORINE AND ALUMINUM THEREBY TO FLUORIDATE THE WATER IN AMOUNT NOT IN EXCESS OF 2.5 PARTS OF FLUORINE PER MILLION PARTS OF WATER AND TO SUPPLY THE ALUMINUM COMPONENT OF A SUBSEQUENTLY FORMED FLOCCULENT PRECIPITATE FOR ENTRAINING SUSPENDED MINERAL MATTER INITIALLY CONTAINED IN THE WATER.
References Cited (Backward Citations)
US1705589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |