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USRE28323E Expired / Lapsed US ⏱️ 0.0 years remaining

Continuous clarification-filtration method

Assignee: —
•
Filing: 1973-02-14
•
Granted: 1975-01-28
•
Expires: 1993-02-14
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Abstract

Abstract TO BE REMOVED THEREFROM, SAID MATTER BEING SELECTED FROM THE GROUP CONSTISTING OF FLOC, FIBERS, PARTIALLY OR TOTALLY FORMED FLOC, AND PARTICALLY OR TOTALLY FLOCCULATED FIBERS, SAID METHOD COMPRISING THE STEPS OF: 1. INTRODUCING INTO SAID LIQUID A FLOW OF GAS BUBBLES HAVING CONTAINED WITHIN THE INDIVIDUAL BUBBLES AT LEAST ONE POWDERED CHEMICAL PARTICLE HAVING AN ELECTRICAL CHARGE OF THE OPPOSITE POLARITY AS THE MATTER TO BE REMOVED FROM THE LIQUID TO BE CLARIFIED, SAID POWDERED CHEMICAL ALSO BEING A FLOCCULATING AGENT FOR THE MATTER TO BE REMOVED IN THE EVENT SAID MATTER TO BE REMOVE IS NOT OTHERWISE FLOCCULATED; 2. PROVIDING MEANS TO INSURE UNIFORM MIXING OF SAID GAS BUBBLES THROUGHOUT SAID LIQUID TO BE CLARFIED; AND 3. SUBSEQUENTLY REMOVING FROM THE SURFACE OF SAID LIQUID THE CONGLOMERATE FORMED BY ADHERENCE OF SAID NOW FLOCCULATED MATTER TO BE REMOVED FROM SAID LIQUID WITH THE POWDERED CHEMICALS INTRODUCED INTO SAID LIQUID IN SAID GAS BUBBLES, THUS LEAVING A CLARIFIED LIQUID BEHIND.

Inventors

No inventors recorded.

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 20:13
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/24; B; B03; B03D; B03D1/00; B03D1/14; B03D1/1412; B03D1/1443; B03D1/1456; B03D1/1462; B03D1/24; B03D1/245; C02F1/52

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 67 words
INTRODUCING INTO SAID LIQUID A FLOW OF GAS BUBBLES HAVING CONTAINED WITHIN THE INDIVIDUAL BUBBLES AT LEAST ONE POWDERED CHEMICAL PARTICLE HAVING AN ELECTRICAL CHARGE OF THE OPPOSITE POLARITY AS THE MATTER TO BE REMOVED FROM THE LIQUID TO BE CLARIFIED, SAID POWDERED CHEMICAL ALSO BEING A FLOCCULATING AGENT FOR THE MATTER TO BE REMOVED IN THE EVENT SAID MATTER TO BE REMOVE IS NOT OTHERWISE FLOCCULATED;
Claim 2
Dependent Claim 67 words
INTRODUCING INTO SAID LIQUID A FLOW OF GAS BUBBLES HAVING CONTAINED WITHIN THE INDIVIDUAL BUBBLES AT LEAST ONE POWDERED CHEMICAL PARTICLE HAVING AN ELECTRICAL CHARGE OF THE OPPOSITE POLARITY AS THE MATTER TO BE REMOVED FROM THE LIQUID TO BE CLARIFIED, SAID POWDERED CHEMICAL ALSO BEING A FLOCCULATING AGENT FOR THE MATTER TO BE REMOVED IN THE EVENT SAID MATTER TO BE REMOVE IS NOT OTHERWISE FLOCCULATED;
Claim 3
Dependent Claim 17 words
PROVIDING MEANS TO INSURE UNIFORM MIXING OF SAID GAS BUBBLES THROUGHOUT SAID LIQUID TO BE CLARFIED; AND
Claim 4
Dependent Claim 17 words
PROVIDING MEANS TO INSURE UNIFORM MIXING OF SAID GAS BUBBLES THROUGHOUT SAID LIQUID TO BE CLARFIED; AND
Claim 5
Dependent Claim 42 words
SUBSEQUENTLY REMOVING FROM THE SURFACE OF SAID LIQUID THE CONGLOMERATE FORMED BY ADHERENCE OF SAID NOW FLOCCULATED MATTER TO BE REMOVED FROM SAID LIQUID WITH THE POWDERED CHEMICALS INTRODUCED INTO SAID LIQUID IN SAID GAS BUBBLES, THUS LEAVING A CLARIFIED LIQUID BEHIND.
Claim 6
Dependent Claim 42 words
SUBSEQUENTLY REMOVING FROM THE SURFACE OF SAID LIQUID THE CONGLOMERATE FORMED BY ADHERENCE OF SAID NOW FLOCCULATED MATTER TO BE REMOVED FROM SAID LIQUID WITH THE POWDERED CHEMICALS INTRODUCED INTO SAID LIQUID IN SAID GAS BUBBLES, THUS LEAVING A CLARIFIED LIQUID BEHIND.

References Cited (Backward Citations)

US1840267A Cited
US3147217A Cited
US3117082A Cited
US3479281A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-01-27 1978-07-29 1979-01-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-01-27 1982-07-29 1983-01-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-01-27 1986-07-29 1987-01-28 $7700.00 Window Closed / Lapsed

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