US2533430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for analyzing flue gas
Assignee: Carnegie Illinois Steel Corp
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Filing: 1945-01-13
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Granted: 1950-12-12
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Expires: 1965-01-13
Abstract
No abstract record available.
Inventors
- 👤 Chase Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:25
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/14; G01N27/16; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/207497; Y10T436/208339; Y10T436/21; Y10T436/218
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE METHOD OF ANALYZING FLUE GAS FOR THE PRESENCE OF FREE OXYGEN OR A COMBUSTIBLER THEREIN WHICH COMPRISES SAMPLING THE FLUE GAS AT A CON-S STANT TEMPERATURE AND A CONSTANT FLOW RATE, ADDING HYDROGEN TO THE FLUE GAS SAMPLE AT A CONSTANT FLOW RATE, PASSING THE RESULTANT GAS MIXTURE AT A CONSTANT FLOW RATE TO AN ANALYZING ZONE, BURNING THE HYDROGEN WITH ANY FREE OXYGEN IN THE FLUE GAS IN SAID ZONE, ADDING OXYGEN TO THE RESIDUAL FLUE GAS SAMPLE AT A CONSTANT FLOW RATE, BURNIGN ANY COMBUSTIBLE IN TEH RESIDUAL SAMPLE WITH THE ADDED OXYGEN IN SAID ZONE, AND DETERMINING WHETHER THE ORIGINAL FLUE GAS SAMPLE CONTAINS FREE OXYUGEN OR A COMBUSTIBLE IN RESPONSE TO THE HEAT DEVELOPED BY THE COMBUSION OF THE GAS.
Claim 2
Independent Claim
125 words
THE METHOD OF ANALYZING FLUE GAS FOR THE PRESENCE OF FREE OXYGEN OR A COMBUSTIBLER THEREIN WHICH COMPRISES SAMPLING THE FLUE GAS AT A CON-S STANT TEMPERATURE AND A CONSTANT FLOW RATE, ADDING HYDROGEN TO THE FLUE GAS SAMPLE AT A CONSTANT FLOW RATE, PASSING THE RESULTANT GAS MIXTURE AT A CONSTANT FLOW RATE TO AN ANALYZING ZONE, BURNING THE HYDROGEN WITH ANY FREE OXYGEN IN THE FLUE GAS IN SAID ZONE, ADDING OXYGEN TO THE RESIDUAL FLUE GAS SAMPLE AT A CONSTANT FLOW RATE, BURNIGN ANY COMBUSTIBLE IN TEH RESIDUAL SAMPLE WITH THE ADDED OXYGEN IN SAID ZONE, AND DETERMINING WHETHER THE ORIGINAL FLUE GAS SAMPLE CONTAINS FREE OXYUGEN OR A COMBUSTIBLE IN RESPONSE TO THE HEAT DEVELOPED BY THE COMBUSION OF THE GAS.
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) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |