US3692492A
Expired / Lapsed
US
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Apparatus for measuring carbon monoxide and total hydrocarbons in gas sample
Assignee: MSA Safety Inc
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Filing: 1971-02-08
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Granted: 1972-09-19
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Expires: 1991-02-08
Abstract
Abstract FIRST AND SECOND MEANS FOR MESURING HYDROCARBONS IN A GAS SAMPLE ARE PROVIDED. A CONDUIT DELIVERS PART OF THE SAMPLE TO THE FIRST MEANS, AND A SECOND CONDUIT DELIVERS THE REST OF THE SAMPLE TO THE SECOND MEANS AT THE SAME TIME. IN THE SECOND CONDUIT THERE IS A REACTOR FOR CONVERTING CARBON MONOXIDE TO METHANE, SO THE PORTION OF THE SAMPLE DELIVERED BY THE SECOND CONDUIT WILL CONTAIN A GREATER AMOUNT OF HYDROCARBONS THAN THE PART DELIVERED BY THE FIRST CONDUIT.
Inventors
- 👤 Albert A Poll Jr
- 👤 Sidney D Delaune
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:54
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/0004; G01N33/0009; G01N33/0022; G01N33/0024; G01N27/00; G01N27/62; G01N27/626; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/204998; Y10T436/205831; Y10T436/21
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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |