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US3817860A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of disinfecting water and demand bactericide for use therein

Assignee: Kansas State University
•
Filing: 1972-11-21
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Granted: 1974-06-18
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Expires: 1992-11-21
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Abstract

Abstract A METHOD OF TREATING BACTERIALLY CONTAMINATED WATER FOR DIRECT PRODUCTION OF DISINFECTED WATER READY FOR USE, WHEREIN THE WATER IS RENDERED BACTERIALLY STERILE BY PASSING IS THROUGH A STRONGLY BASIC ANION EXCHANGE RESIN CONTAINING COMBINED TRIIODIDE (13-) WITHOUT FORMING A DETECTABLE CONCENTRATION OF IODINE IN THE DISINFECTED WATER, THE TRIIODIDE IS COMBINED IN A STABLE FORM WITH THE BASIC GROUPS OF THE RESIN. ALTHOUGH THE DISSOCIATION OF THE IODINE OF THE RESIN-INSOLUBILIZED TRIIODIDE IS EXTREMELY LOW, THE TRIIODIDE RESINS ARE HIGHLY BACTERICIDAL, THE TRIIODIDE GROUPS REACTING ON DEMAND WITH BACTERA IN WATER SUSPENSIONS TO KILL THE BACTERIA. THE INVENTION ALSO EXTENDS TO THIS NOVEL DEMAND BACTERICIDE.

Inventors

  • 👤 J Lambert
  • 👤 L Fina

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 17:37
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C02F5/10; B; B01; B01J; B01J41/00; B01J41/04; B01J41/05; C02F1/00; C02F1/72; C02F1/76; C02F1/766

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) 1977-06-17 1977-12-17 1978-06-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-06-17 1981-12-17 1982-06-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-06-17 1985-12-17 1986-06-18 $7700.00 Window Closed / Lapsed

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