US3322504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic carbon determination and measurement
Assignee: Union Carbide Corp
•
Filing: 1963-10-17
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Granted: 1967-05-30
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Expires: 1983-10-17
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
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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 |