US3066095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water purification agents and method of using same
Assignee: Hagan Chemicals and Controls Inc
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Filing: 1959-09-30
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Granted: 1962-11-27
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Expires: 1979-09-30
Abstract
No abstract record available.
Inventors
- 👤 John J Hronas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:02
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/54; C02F1/5236; C02F1/5263
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
A METHOD OF CLARIFYING WATER WHICH COMPRISING CONTACTING THE WATER WITH AN EFFECTIVE AMOUNT OF A WATERSOLUBLE INORGANIC COAGULANT SELECTED FROM THE GROUP CONSISTING OF ALUMINUM SULFATE, FERRIC CHLORIDE, FERRIC SULFATE, FERROUS SULFATE, AND SODIUM ALUMINATE, AT LEAST 0.05 PART PER MILLION OF A BENTONITIC CLAY AND AT LEAST 0.05 PART PER MILLION OF AN ORGANIC POLYELECTROLYTE WHICH IS CAPABLE OF INCREASING THE CAPACITY OF BOTH THE BENTONITIC CLAY AND THE WATER-SOLUBLE COAGULANT TO ADSORB AND ADSORB SOLIDS WHICH ARE SUSPENDED IN THE WATER, SAID POLYELECTROLYTE SELECTED FROM THE GROUP CONSISTING OF WATER-SOLUBLE CELLULOSE DERIVATIVES, WATER-SOLUBLE POLYACRYLAMIDES, HYDROLYZED WATER-SOLUBLE POLYACRYLAMIDES, AND SALTS THEREOF, HAVING MOLECULAR WEIGHT OF AT LEAST 10,000, THEREBY FORM-ING A FLOC AND SEPARATING A PURIFIED WATER FROM SAID FLOC.
References Cited (Backward Citations)
US2284827A
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US2393269A
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US2613180A
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US2728725A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-26 | 1966-05-28 | 1966-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-26 | 1970-05-28 | 1970-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-26 | 1974-05-28 | 1974-11-27 | $7700.00 | Window Closed / Lapsed |