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US3752652A
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Method and apparatus for measurement of minute quantities of oxygen
Assignee: Chevron Belgium NV
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Filing: 1972-02-11
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Granted: 1973-08-14
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Expires: 1992-02-11
Abstract
Abstract METHOD OR SYSTEM FOR MEASURING MINUTE QUANTITIES OF OXYGEN IN A MIXTURE WITH INERT GAS. A SAMPLE IS PASSED OVER A REDUCED HYDROGENATION CATALYST TO REACT THE OXYGEN WITH ADSORBED HYDROGEN. THE HYDROGEN IS PASSED OVER THE CATALYST WHILE MEASURING THE QUANTITY OF HYDROGEN USED IN REDUCING AND SATURATING THE CATALYST ONCE MORE. THE QUANTITY OF OXYGEN IN THE SAMPLE IS THEN DETERMINED BY THE STOICHIOMETRIC RELATION BETWEEN HYDROGEN AND OXYGEN.
Inventors
- 👤 Vleesschauwer W De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:48
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/005; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/207497; Y10T436/209163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |