Patent US4383238A successfully refreshed from Google Patents.
US2697789A
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Apparatus and procedure for continuous gas analysis
Assignee: Standard Oil Development Co
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Filing: 1948-06-05
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Granted: 1954-12-21
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Expires: 1968-06-05
Abstract
No abstract record available.
Inventors
- 👤 Charles W Skarstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:55
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N21/3504
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
AN ARRANGEMENT FOR THE DETERMINATION OF A CONSTITUENT IN A MIXTURE COMPRISING IN COMBINATION AT LEAST TWO RADIATION DETECTORS, A SOURCE OF RADIATION ADAPTED TO IRRADIATE SAID DETECTORS, A FIRST BODY CONTAINING THE MIXTURE TO BE TESTED AND LOCATED IN THE RANGE OF RAYS BETWEEN THE SAID SOURCE AND THE SAID DETECTORS, SAID FIRST BODY BEING CHARACTERIZED BY NON-PARALLEL SURFACES FACING THE SAID SOURCE OF RADIATION AND THE SAID DETECTORS, A SECOND BODY CONTAINING THE CONSTITUENT TO BE DETERMINED AND INSERTED IN THE RANGE OF RAYS BETWEEN THE SAID SOURCE AND ONE OF SAID DE DECTOES, A THIRD BODY CONTAINING A SELECTIVELY RADIATION ABSORBENT COMPOSITION AND INSERTED IN THE RANGE OF RAYS BETWEEN THE SAID SOURCE AND THE OTHER OF SAID DETECTORS, AND MEANS FOR MEASURING THE DIFFERENCE OF IRRADIATION OF THE SAID DETECTORS.
Claim 2
Dependent Claim
134 words
AN ARRANGEMENT FOR THE DETERMINATION OF A CONSTITUENT IN A MIXTURE COMPRISING IN COMBINATION AT LEAST TWO RADIATION DETECTORS, A SOURCE OF RADIATION ADAPTED TO IRRADIATE SAID DETECTORS, A FIRST BODY CONTAINING THE MIXTURE TO BE TESTED AND LOCATED IN THE RANGE OF RAYS BETWEEN THE SAID SOURCE AND THE SAID DETECTORS, SAID FIRST BODY BEING CHARACTERIZED BY NON-PARALLEL SURFACES FACING THE SAID SOURCE OF RADIATION AND THE SAID DETECTORS, A SECOND BODY CONTAINING THE CONSTITUENT TO BE DETERMINED AND INSERTED IN THE RANGE OF RAYS BETWEEN THE SAID SOURCE AND ONE OF SAID DE DECTOES, A THIRD BODY CONTAINING A SELECTIVELY RADIATION ABSORBENT COMPOSITION AND INSERTED IN THE RANGE OF RAYS BETWEEN THE SAID SOURCE AND THE OTHER OF SAID DETECTORS, AND MEANS FOR MEASURING THE DIFFERENCE OF IRRADIATION OF THE SAID DETECTORS.
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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) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |