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US3587859A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of separating solid particles from a slurry with wash column separators

Assignee: RONALD F PROBSTEIN
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Filing: 1968-07-30
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Granted: 1971-06-28
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Expires: 1988-07-30
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Abstract

Abstract AN APPARATUS AND METHOD FOR REMOVING SOLID PARTICLES, SUCH AS ICE CRYSTALS, FROM A MIXTURE OF SAID PARTICLES IN A LIQUID MEDIUM, SUCH AS BRINE, WHEREIN A WASH COLUMN SEPARATOR IS USED TO FORM A POROUS BED OF SAID PARTICLES AND THE LIQUID MEDIUM IS CAUSED TO FLOW OUTWARDLY FROM THE COLUMN AT A SCREENED OPENING POSITIONED INTERMEDIATE ITS ENDS. A WASH LIQUID IS INTRODUCED AT ONE END OF THE COLUMN TO DISPLACE THE LIQUID MEDIUM FROM THE INTERSTICES BETWEEN THE PARTICLES AS THE POROUS BED MOVES THROUGH THE COLUMN. CONTROL MEANS ARE PROVIDED TO CONTROL THE RELATIONSHIP AMONG THE PRESSURES AT THE ENDS OF THE POROUS BED AND THE PRESSURE AT SUCH SCREENED OPENING SO AS TO MAXIMIZE THE RATE AT WHICH THE PARTICLES CAN BE REMOVED AT THE OUTPUT END OF THE COLUMN.

Inventors

  • 👤 Ronald F Probstein
  • 👤 Josef Shwartz

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 16:46
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/02; C; C02; C02F; C02F1/00; C02F1/22; C02F2103/00; C02F2103/08; Y; Y02; Y02A; Y02A20/00; Y02A20/124

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1974-06-27 1974-12-27 1975-06-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-06-27 1978-12-27 1979-06-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-06-27 1982-12-27 1983-06-28 $7700.00 Window Closed / Lapsed

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