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US3703438A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for the stabilization of blood

Assignee: Belorussky Institut Perelivania Krovi
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Filing: 1969-04-08
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Granted: 1972-11-21
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Expires: 1989-04-08
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Abstract

Abstract STABILIZATION OF BLOOD BY BINDING THE CALCIUM IONS CONTAINED THEREIN IN THE FORM OF AN INSOLUBLE COMPLEX BY PASSING THE BLOOD INTO CONTACT WITH AN ANTICOAGULANT COMPRISING INSOLUBLE SALTS OF ACID ESTERS OF CELLULOSE SELECTED FROM THE GROUP CONSISTING OF SALTS OF CARBOXYLIC ACID ESTERS OF CELLULOSE, SALTS OF ACID ESTERS OF CELLULOSE WITH AN INORGANIC ACID CONTAINING AN ORGAINC CATION, MIXTURES OF THE SAME WITH EACH OTHER, AND MIXTURE OF THE SAME WITH INORGANIC SALTS OF ACID INORGANIC ESTERS OF CELLULOSE. TO IMPROVE STORAGE STABILITY CONSERVANTS MAY BE INTRODUCED INTO THE DECALCIFIED BLOOD. ALSO, ANTISEPTIC AGENT SUCH AS LEVOMYCETIN CAN BE INCLUDED. THE ACID ESTERS MAY BE PREPARED BY REACTING CELLULOSE, FOR EXAMPLE, IN THE FORM OF MEDICAL GAUZE, WITH THE ACIDS FOLLOWED BY CONVERTING THE RESULTANT ACID ESTERS INTO SALTS WITH SALT SOLUTIONS.

Inventors

  • 👤 Stepan Ilich Dovgalev
  • 👤 Igor Nikolaevich Ermolenko
  • 👤 Evgeny Danilovich Buglov
  • 👤 Ivan Petrovich Danilov
  • 👤 Mikhail Lvovich Longin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 06:09
CPC Classifications
C; C08; C08B; C08B3/00; C08B3/12; C08B15/00; C08B15/10

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) 1975-11-21 1976-05-22 1976-11-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-11-21 1980-05-22 1980-11-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-11-21 1984-05-22 1984-11-21 $7700.00 Window Closed / Lapsed

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