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Patent US3308061A successfully refreshed from Google Patents.
US3308061A
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Ozone treatment of waste aqueous effluent from alkyllead manufacture
Assignee: EIDP Inc
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Filing: 1965-03-05
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Granted: 1967-03-07
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Expires: 1985-03-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Herman E Collier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:32
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5236; C02F1/72; C02F1/78; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/911; Y10S210/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A PROCESS FOR TREATING AN AQUEOUS EFFLUENT FROM THE MANUFACTURE OF ALKYLLEAD COMPOUNDS, SAID EFFLUENT CONTAINING ABOUT 5 TO 5000 P.P.M OF LEAD AS DISSOLVED ORGANIC LEAD, SAID DISSOLVED ORGANIC LEAD BEING FURTHER CHARACTERIZED BY REMAINING IN SOLUTION AFTER PH ADJUSTMENT TO BETWEEN 8 TO 9.5, WHICH PROCESS COMPRISES THE STEPS OF (A) ADJUSTING THE PH OF THE AQUEOUS EFFLUENT TO BETWEEN 8.0 TO 9.5, (B) INTIMATELY CONTACTING THE AQUEOUS EFFLUENT WITH AN OZONE CONTAINING GAS THEREBY CONVERTING SAID WATERSOLUBLE ORGANIC LEAD PRODUCTS TO WATER-INSOLUBLE PRODUCTS, AND THEREAFTER (C) PRECIPITATING THE CONVERTED LEAD COMPOUNDS, AND (D) SEPARATING THE PRECIPITATED LEAD-CONTAINING COMPOUNDS FROM THE AQUEOUS EFFLUENT.
Claim 2
Dependent Claim
105 words
A PROCESS FOR TREATING AN AQUEOUS EFFLUENT FROM THE MANUFACTURE OF ALKYLLEAD COMPOUNDS, SAID EFFLUENT CONTAINING ABOUT 5 TO 5000 P.P.M OF LEAD AS DISSOLVED ORGANIC LEAD, SAID DISSOLVED ORGANIC LEAD BEING FURTHER CHARACTERIZED BY REMAINING IN SOLUTION AFTER PH ADJUSTMENT TO BETWEEN 8 TO 9.5, WHICH PROCESS COMPRISES THE STEPS OF (A) ADJUSTING THE PH OF THE AQUEOUS EFFLUENT TO BETWEEN 8.0 TO 9.5, (B) INTIMATELY CONTACTING THE AQUEOUS EFFLUENT WITH AN OZONE CONTAINING GAS THEREBY CONVERTING SAID WATERSOLUBLE ORGANIC LEAD PRODUCTS TO WATER-INSOLUBLE PRODUCTS, AND THEREAFTER (C) PRECIPITATING THE CONVERTED LEAD COMPOUNDS, AND (D) SEPARATING THE PRECIPITATED LEAD-CONTAINING COMPOUNDS FROM THE AQUEOUS EFFLUENT.
References Cited (Backward Citations)
CA572192A
Cited
US1331334A
Cited
US2400383A
Cited
US2410356A
Cited
US2440810A
Cited
US2426789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |