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US3174037A
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Method and apparatus for measuring the concentration of a gas in a mixture of gases
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1962-05-28
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Granted: 1965-03-16
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Expires: 1982-05-28
Abstract
No abstract record available.
Inventors
- 👤 Howard L Demorest
- 👤 Rex C Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:25
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N21/3504; G01N21/314
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
AN APPARATUS FOR MEASURING CONCENTRATIONS OF A GAS IN A MIXTURE OF GASES BY MEASURING ATTENUATION OF ELECTROMAGNETIC RADIATION WHICH COMPRISES MEANS FOR COLLECTING A LYAER OF SAID GAS INDICATIVE OF THE COMCENTRATION OF SAID GAS IN SAID MIXTURE OF GASES, AN ELECTROMAGNETIC RADIATON SOURCE, MEANS FOR DIRECTING ELECTROMEGNETIC RADIATION THROUGH SAID LAYER, AND MEANS FOR MEASURING THE ATTENUATION OF SAID RADIATION BY SAID LAYER.
Claim 2
Independent Claim
65 words
AN APPARATUS FOR MEASURING CONCENTRATIONS OF A GAS IN A MIXTURE OF GASES BY MEASURING ATTENUATION OF ELECTROMAGNETIC RADIATION WHICH COMPRISES MEANS FOR COLLECTING A LYAER OF SAID GAS INDICATIVE OF THE COMCENTRATION OF SAID GAS IN SAID MIXTURE OF GASES, AN ELECTROMAGNETIC RADIATON SOURCE, MEANS FOR DIRECTING ELECTROMEGNETIC RADIATION THROUGH SAID LAYER, AND MEANS FOR MEASURING THE ATTENUATION OF SAID RADIATION BY SAID LAYER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |