US3298786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas chromatographic method and apparatus for determination of oxygen content in organic substances
Assignee: HP Inc
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Filing: 1963-03-04
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Granted: 1967-01-17
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Expires: 1983-03-04
Abstract
No abstract record available.
Inventors
- 👤 Orville N Hinsvark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:15
CPC Classifications
G; G01; G01N; G01N31/00; Y; Y10; Y10S; Y10S436/00; Y10S436/905; Y10T; Y10T436/00; Y10T436/20; Y10T436/22; Y10T436/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A METHOD OF DETERMINING THE OXYGEN CONTENT OF AN ORGANIC CHEMICAL SUBSTANCE CONTAINING CARBON, HYDROGEN, AND OXYGEN COMPRISING THE STEPS OF: INTRODUCING A SAMPLE OF THE SUBSTANCE TO BE ANALYZED INTO A CLOSED, HEATED REACTION CHAMBER HAVING AN INERT GAS ATMOSPHERE, SUBJECTING THE SAMPLE TO THERMAL DECOMPOSITON IN THE PRESENCE OF CARBON IN SAID CLOSED CHAMBER TO YIELD DECOMPOSITION PRODUCTS INCLUDING CARBON DIOXIDE, CARBON MONOXIDE, AND WATER VAPOR, RETAINING THE DECOMPOSITON PRODUCTS IN SAID CLOSED CHAMBER UNTIL THEY ARE REDUCED BY THE CARBON TO REDUCTION PRODUCTS INCLUDING CARBON MONOXIDE AND HYDROGEN GAS, WHEREBY SUBSTANTIALLY ALL OF THE OXYGEN IN SAID SAMPLE IS CONVERTED TO CARBON MONOXIDE, SWEEPING THE REDUCTION PRODUCTS FROM SAID CHAMBER AS A PLUG SAMPLE WITH AN INERT GAS, PASSING THE REDUCTION PRODUCTS THROUGH A CHROMATOGRAPHIC SEPARATING COLUMN, AND DETECTING CHANGES IN THE COMPOSITION OF THE EFFLUENT FROM SAID COLUMN.
Claim 2
Independent Claim
142 words
A METHOD OF DETERMINING THE OXYGEN CONTENT OF AN ORGANIC CHEMICAL SUBSTANCE CONTAINING CARBON, HYDROGEN, AND OXYGEN COMPRISING THE STEPS OF: INTRODUCING A SAMPLE OF THE SUBSTANCE TO BE ANALYZED INTO A CLOSED, HEATED REACTION CHAMBER HAVING AN INERT GAS ATMOSPHERE, SUBJECTING THE SAMPLE TO THERMAL DECOMPOSITON IN THE PRESENCE OF CARBON IN SAID CLOSED CHAMBER TO YIELD DECOMPOSITION PRODUCTS INCLUDING CARBON DIOXIDE, CARBON MONOXIDE, AND WATER VAPOR, RETAINING THE DECOMPOSITON PRODUCTS IN SAID CLOSED CHAMBER UNTIL THEY ARE REDUCED BY THE CARBON TO REDUCTION PRODUCTS INCLUDING CARBON MONOXIDE AND HYDROGEN GAS, WHEREBY SUBSTANTIALLY ALL OF THE OXYGEN IN SAID SAMPLE IS CONVERTED TO CARBON MONOXIDE, SWEEPING THE REDUCTION PRODUCTS FROM SAID CHAMBER AS A PLUG SAMPLE WITH AN INERT GAS, PASSING THE REDUCTION PRODUCTS THROUGH A CHROMATOGRAPHIC SEPARATING COLUMN, AND DETECTING CHANGES IN THE COMPOSITION OF THE EFFLUENT FROM SAID COLUMN.
References Cited (Backward Citations)
US3096157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |