US2849618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High resolution infra-red spectrometer analyzer for gases
Assignee: Phillips Petroleum Co
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Filing: 1953-07-20
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Granted: 1958-08-26
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Expires: 1973-07-20
Abstract
No abstract record available.
Inventors
- 👤 Donald C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:18
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N21/3504
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A METHOD OF GAS ANALYSIS TO DETERMINE THE PRESENCE AND QUALITY OF A PARTICULAR GAS IN A GASEOUS SAMPLE WHICH COMPRISES, IN COMBINATION, THE STEPS OF PASSING A BEAM OF RADIATION THROUGH A GAEOUS SAMPLE; RESOLVING SAID BEAM INTO ITS SPECTRUM; CONTINUOUSLY SCANNING A FIXED AND DEFINITE INTERVAL OF SAUD SPECTRUM CONTAINING PERIODIC ABSORPTION LINES OF SUBSTANTIALLY EQUAL INTENSITIES CHARACTERISTIC OF SAID PARTICULAR GAS SO AS TO PRODUCE AN ELECTRICAL SIGNAL; FEEDING SAID SIGNAL INTO A TUNED AMPLIFIER, SAID AMPLIFIER BEING TUNED TO A FREQUENCY EQUAL TO THE PRODUCT OF THE NUMBER OF ABSORPTION LINES AND THE RATE OF SCAN.
Claim 2
Independent Claim
100 words
A METHOD OF GAS ANALYSIS TO DETERMINE THE PRESENCE AND QUALITY OF A PARTICULAR GAS IN A GASEOUS SAMPLE WHICH COMPRISES, IN COMBINATION, THE STEPS OF PASSING A BEAM OF RADIATION THROUGH A GAEOUS SAMPLE; RESOLVING SAID BEAM INTO ITS SPECTRUM; CONTINUOUSLY SCANNING A FIXED AND DEFINITE INTERVAL OF SAUD SPECTRUM CONTAINING PERIODIC ABSORPTION LINES OF SUBSTANTIALLY EQUAL INTENSITIES CHARACTERISTIC OF SAID PARTICULAR GAS SO AS TO PRODUCE AN ELECTRICAL SIGNAL; FEEDING SAID SIGNAL INTO A TUNED AMPLIFIER, SAID AMPLIFIER BEING TUNED TO A FREQUENCY EQUAL TO THE PRODUCT OF THE NUMBER OF ABSORPTION LINES AND THE RATE OF SCAN.
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) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |