Patent US3756781A successfully refreshed from Google Patents.
US3756781A
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US
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Total sulfur analyzer and method
Assignee: Baker Hughes Holdings LLC
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Filing: 1971-05-18
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Granted: 1973-09-04
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Expires: 1991-05-18
Abstract
Abstract A TOTAL SULFUR ANALYZER AND METHOD WHEREIN A HYDROCARBON SAMPLE USUALLY IN LIQUID FORM AND HAVING SULFUR OR SULFUR COMPOUNDS THEREWITH, IS PYROLYZED TO CONVERT THE HYDROCARBONS TO LIGHTER MOLECULAR WEIGHT HYDROCARBONS, SUCH AS METHANE, WHICH IS GASEOUS AT AMBIENT TEMPERATURES, AND THEN THE GASEOUS SAMPLE IS HYDROGENATED TO CON- VERT THE SULFUR IN THE SAMPLE INTO HYDROGEN SULFIDE WHICH IS THEN MEASURED BY A HYDROGEN SULFIDE MEASURING DEVICE, WHEREBY THE TOTAL SULFUR CONTENT OF THE SAMPLE, REGARDLESS OF ITS ORGINIAL FORM IN THE SAMPLE, IS ANALYZED.
Inventors
- 👤 C Kimbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:09
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/26; G01N33/28; G01N33/2835; G01N33/287; Y; Y10; Y10T; Y10T436/00; Y10T436/18; Y10T436/182; Y10T436/186; Y10T436/188
Claims Analysis
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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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |