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US3699007A Expired / Lapsed US ⏱️ 0.0 years remaining

Evaporating-concentrating apparatus and method

Assignee: AMF Inc
•
Filing: 1971-03-12
•
Granted: 1972-10-17
•
Expires: 1991-03-12
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Abstract

Abstract THE INVENTION IS FOR AN EVAPORATING-CONDENSING CONCENTRATOR AND FOR A METHOD WHICH INCREASES THE PROPORTION OF A SOLUTE IN A LIQUID, SUCH AS INCREASING THE CONCENTRATION OF BORIC ACID IN WATER. THE APPARATUS IS CONSTRUCTED TO TAKE ADVANTAGE OF RELATIVELY HIGH-VELOCITY FLOWS THROUGH SHARP-EDGED ORIFICES OF THE SIEVE PLATES WHICH ARE USED IN CONJUNCTION WITH DROWNED MESH SCRUBBERS, THEREBY AFFORDING AN UNUSUALLY LOW CARRY-OVER OF SOLIDS AND GASES IN THE DISTILLATE WHILE GREATLY REDUCING THE SPACE REQUIRED BY CONVENTIONAL CONSTRUCTIONS. MOREOVER, THE APPARATUS AND METHOD PREFERABLY INCLUDES MEANS AND PROCESS STEPS FOR RECYCLING OR REFLUXING AT LEAST PART OF THE PURIFIED CONCENTRATE AS CLEANING LIQUID.

Inventors

  • 👤 Charles Richard Picek
  • 👤 Cornelis Van Hoek

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 22:41
CPC Classifications
B; B01; B01D; B01D3/00; Y; Y10; Y10S; Y10S159/00; Y10S159/12

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) 1975-10-17 1976-04-17 1976-10-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-10-17 1980-04-17 1980-10-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-10-17 1984-04-17 1984-10-17 $7700.00 Window Closed / Lapsed

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