US2573649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas analyzer
Assignee: Individual
•
Filing: 1947-09-30
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Granted: 1951-10-30
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Expires: 1967-09-30
Abstract
No abstract record available.
Inventors
- 👤 Alfred O C Nier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:16
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A SYSTEM FOR MEASURING SMALL QUANTITIES OF CONTAMINATION IN A GASEOUS MIXTURE COMPRISING MEANS FOR INTRODUCING A FLOW OF THE MIXTURE FROM A HIGH PRESSURE AREA TO A LOW PRESSURE AREA, MEANS FOR REGULATING THE FLOW OF THE MIXTURE TO THE LOW PRESSURE AREA TO MAINTAIN A PREDETERMINED PRESSURE THEREIN, MEANS FOR REMOVING THE DESIRED COMPONENTS FROM THE MIXTURE, AN ION GAUGE FOR MEASURING THE CONTAMINATION GASES AS A FUNCTION OF PRESSURE, AND A CONSTRICTION ADJUSTABLE TO A FIXED POSITION FOR PROVIDING A LARGE PRESSURE DIFFERENTIAL BETWEEN THE LOW PRESSURE AREA AND THE LOCATION OF THE ION GAUGE.
Claim 2
Independent Claim
98 words
A SYSTEM FOR MEASURING SMALL QUANTITIES OF CONTAMINATION IN A GASEOUS MIXTURE COMPRISING MEANS FOR INTRODUCING A FLOW OF THE MIXTURE FROM A HIGH PRESSURE AREA TO A LOW PRESSURE AREA, MEANS FOR REGULATING THE FLOW OF THE MIXTURE TO THE LOW PRESSURE AREA TO MAINTAIN A PREDETERMINED PRESSURE THEREIN, MEANS FOR REMOVING THE DESIRED COMPONENTS FROM THE MIXTURE, AN ION GAUGE FOR MEASURING THE CONTAMINATION GASES AS A FUNCTION OF PRESSURE, AND A CONSTRICTION ADJUSTABLE TO A FIXED POSITION FOR PROVIDING A LARGE PRESSURE DIFFERENTIAL BETWEEN THE LOW PRESSURE AREA AND THE LOCATION OF THE ION GAUGE.
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) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |