Patent US2855820A successfully refreshed from Google Patents.
US2855820A
Expired / Lapsed
US
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Method of spectroscopic gas analysis
Assignee: Consolidated Electrodynamics Corp
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Filing: 1955-06-10
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Granted: 1958-10-14
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Expires: 1975-06-10
Abstract
No abstract record available.
Inventors
- 👤 Charles F Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:49
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/66; G01N21/69
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
THE METHOD OF DETECTING THE PRESENCE OF A COMPONENT OF A GAS MIXTURE WHICH COMPRISES INTRODUCING THE GAS MIXTURE TO A DISCHARGE SPACE DEFINED BY TWO ANODES ON OPPOSITE SIDES OF A CATHODE, MAINTAINING THE SPACE AT A PRESSURE LOWER THAN THAT AT WHICH THE MEAN FREE PATH OF THE COMPONENT IS EQUAL TO A MAJOR DIMENSION OF THE DISCHARGE SPACE, APPLYING A LOW FREQUENCY VOLTAGE TO THE CATHODE TO SUSTAIN A GLOW DISCHARGE, MAINTAINING A MAGNETIC FIELD ACROSS THE DISCHARGE SPACE, AND DETECTING THE PRESENCE OF A CHARACTERISTIC LINE OF THE SPECTRUM OF THE COMPONENT IN THE RESULTANT RADIATION.
Claim 2
Independent Claim
100 words
THE METHOD OF DETECTING THE PRESENCE OF A COMPONENT OF A GAS MIXTURE WHICH COMPRISES INTRODUCING THE GAS MIXTURE TO A DISCHARGE SPACE DEFINED BY TWO ANODES ON OPPOSITE SIDES OF A CATHODE, MAINTAINING THE SPACE AT A PRESSURE LOWER THAN THAT AT WHICH THE MEAN FREE PATH OF THE COMPONENT IS EQUAL TO A MAJOR DIMENSION OF THE DISCHARGE SPACE, APPLYING A LOW FREQUENCY VOLTAGE TO THE CATHODE TO SUSTAIN A GLOW DISCHARGE, MAINTAINING A MAGNETIC FIELD ACROSS THE DISCHARGE SPACE, AND DETECTING THE PRESENCE OF A CHARACTERISTIC LINE OF THE SPECTRUM OF THE COMPONENT IN THE RESULTANT RADIATION.
References Cited (Backward Citations)
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US1871226A
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US2047930A
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US2577815A
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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) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |