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US3582473A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for water distillation

Assignee: WILLIAM A BARNSTEAD
•
Filing: 1968-03-07
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Granted: 1971-06-01
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Expires: 1988-03-07
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Abstract

Abstract A METHOD OF DISTILLING WATER IS DISCLOSED TO PROVIDE DISSTILLATE HAVING A PURITY OF THE ORDER OF 2 MILLION OHM-CM. RESISTANCE AND ABOVE FROM TAP WATER. THE METHOD IS PARTICULARLY DIRECTED TO PREVENT GASES, AS CO2, NH3, SO2 ETC., WHICH ARE GENERALLY PRESENT IN TAP WATER OR ARE EXTRACTED FROM THE SURROUNDING ATMOSPHERE DURING THE CONDENSING STAGE IN THE USUAL DISTILLATION PROCESS, FROM DISSOLVING IN THE DISTILLATE DURING CONDENSATION. TO ACCOMPLISH THE DESIRED RESULTS THE CONDENSING STAGE DISCLOSED CONTEMPLATES CONDENSING THE WATER VAPOR IN A VENTED CONDENSER AT A TEMPERATURE ABOVE THE ENVIRONMENTAL BOILING POINT OF WATER WITH A CORRESPONDING PRESSURE ABOVE ENVIRONMENTAL PRESSURE THEREBY TO MAINTAIN THE FLOW OF GASES OUTWARD FROM THE CONDENSER AND, FURTHER, TO PREVENT THE UNWANTED GASES FROM DISSOLVING IN THE CONDENSATE.

Inventors

  • 👤 William A Barnstead

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 02:31
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/045

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) 1974-05-31 1974-11-30 1975-06-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-05-31 1978-11-30 1979-06-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-05-31 1982-11-30 1983-06-01 $7700.00 Window Closed / Lapsed

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