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US3322504A Expired / Lapsed US ⏱️ 0.0 years remaining

Organic carbon determination and measurement

Assignee: Union Carbide Corp
•
Filing: 1963-10-17
•
Granted: 1967-05-30
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Expires: 1983-10-17
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Abstract

No abstract record available.

Inventors

  • 👤 Italo A Capuano

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 13:51
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/18; G01N33/1826; G01N33/1846; G01N31/00; G01N31/005; Y; Y10; Y10T; Y10T436/00; Y10T436/23; Y10T436/235; Y10T436/25; Y10T436/25125

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 196 words
A METHOD FOR CONTINUOUS QUALITATIVE AND QUANTITATIVE DETERMINATION OF CONCENTRATIONS OF ORGANIC CARBON CONSTITUENTS IN AN AQUEOUS SOLUTION WHICH ALSO CONTAINS INORGANIC CARBON CONSTITUENTS, NITROGENS, SULFUR AND CHLORIDE CONSTITUENTS WHICH METHOD COMPRISES THE STEPS OF CONTINUOUSLY ADMIXING FLOWING STREAMS OF SAID AQUEOUS SOLUTION, A BARIUM HYDROXIDE SOLUTION AND GASEOUS OXYGEN; REMOVING PRECIPITATED REACTION PRODUCTS OF SAID BARIUM HYDROXIDE SOLUTION AND SAID INORGANIC CARBON CONSTITUENTS; HEATING THE ADMIXED FLOWING STREAM AFTER SUCH REMOVAL TO OXIDIZE SAID ORGANIC CARBON CONSTITUENTS TO CARBON DIOXIDE; SEPARATIANG AND REMOVING WATER FROM SAID ADMIXED STREAM; PASSING THOSE CONSTITUENTS REMAINING AFTER WATER REMOVAL THROUGH MANGANESE DIOXIDE TO REMOVE NITROGEN AND SULFUR IMPURITIES; PASSING THOSE CONSTITUENTS REMAINING AFTER THE WATER REMOVAL AND THE NITROGEN AND SULFUR IMPURITIES REMOVAL THROUGH POWDERED ANTIMONY METAL TO REMOVE CHLORINE IMPURITIES; REACTING SAID STREAM WITH A CONSTANT FLOW OF DILUTE POTASSIUM HYDROXIDE SOLUTION TO PRODUCE AN INCREASE IN CONDUCTIVITY OF SAID POTASSIUM HYDROXIDE SOLUTION PROPORTIONAL TO CARBON CONCENTRATION THEREIN; AND DIFFERENTLY CONDUCTOMETRICALLY ANALYZING THE REACTION PRODUCT OF SAID CARBON DIOXIDE AND SAID POTASSIUM HYDROXIDE SOLUTION, SAID POTASSIUM HYDROXIDE SOLUTION ALONE BEING USED AS A COMPARISON BASE, TO DETERMINE THE CONCENTRATION OF ORGANIC CARBON CONSTITUENTS IN THE AQUEOUS SOLUTION ANALYZED.
Claim 2
Independent Claim 196 words
A METHOD FOR CONTINUOUS QUALITATIVE AND QUANTITATIVE DETERMINATION OF CONCENTRATIONS OF ORGANIC CARBON CONSTITUENTS IN AN AQUEOUS SOLUTION WHICH ALSO CONTAINS INORGANIC CARBON CONSTITUENTS, NITROGENS, SULFUR AND CHLORIDE CONSTITUENTS WHICH METHOD COMPRISES THE STEPS OF CONTINUOUSLY ADMIXING FLOWING STREAMS OF SAID AQUEOUS SOLUTION, A BARIUM HYDROXIDE SOLUTION AND GASEOUS OXYGEN; REMOVING PRECIPITATED REACTION PRODUCTS OF SAID BARIUM HYDROXIDE SOLUTION AND SAID INORGANIC CARBON CONSTITUENTS; HEATING THE ADMIXED FLOWING STREAM AFTER SUCH REMOVAL TO OXIDIZE SAID ORGANIC CARBON CONSTITUENTS TO CARBON DIOXIDE; SEPARATIANG AND REMOVING WATER FROM SAID ADMIXED STREAM; PASSING THOSE CONSTITUENTS REMAINING AFTER WATER REMOVAL THROUGH MANGANESE DIOXIDE TO REMOVE NITROGEN AND SULFUR IMPURITIES; PASSING THOSE CONSTITUENTS REMAINING AFTER THE WATER REMOVAL AND THE NITROGEN AND SULFUR IMPURITIES REMOVAL THROUGH POWDERED ANTIMONY METAL TO REMOVE CHLORINE IMPURITIES; REACTING SAID STREAM WITH A CONSTANT FLOW OF DILUTE POTASSIUM HYDROXIDE SOLUTION TO PRODUCE AN INCREASE IN CONDUCTIVITY OF SAID POTASSIUM HYDROXIDE SOLUTION PROPORTIONAL TO CARBON CONCENTRATION THEREIN; AND DIFFERENTLY CONDUCTOMETRICALLY ANALYZING THE REACTION PRODUCT OF SAID CARBON DIOXIDE AND SAID POTASSIUM HYDROXIDE SOLUTION, SAID POTASSIUM HYDROXIDE SOLUTION ALONE BEING USED AS A COMPARISON BASE, TO DETERMINE THE CONCENTRATION OF ORGANIC CARBON CONSTITUENTS IN THE AQUEOUS SOLUTION ANALYZED.

References Cited (Backward Citations)

US3172732A Cited
US1375933A Cited
US1560660A Cited
US2230593A Cited
US2559090A Cited
US3140918A Cited
US3205045A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1970-05-29 1970-11-28 1971-05-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1974-05-29 1974-11-28 1975-05-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1978-05-29 1978-11-28 1979-05-30 $7700.00 Window Closed / Lapsed

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