US2601272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and procedure for the determination of helium in gases
Assignee: Individual
•
Filing: 1947-06-27
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Granted: 1952-06-24
•
Expires: 1967-06-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Ellis M Frost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:55
CPC Classifications
G; G01; G01N; G01N7/00; G01N7/02; G01N7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
THE METHOD FOR THE QUANTITATIVE DETERMINATION OF HELIUM IN A SAMPLE OF KNOWN VOLUME OF A HELIUM CONTAINING GAS MIXTURE UNDER KNOWN CONDITIONS OF TEMPERATURE AND PRESSURE WHICH COMPRISES THE STEPS OF ADSORBING NON-HELIUM COMPONENTS FROM SAID GAS MIXTURE; ISOLATING THE RESIDUAL HELIUM IN A SYSTEM OF CONSTANT VOLUME; CONFINING A FIXED PORTION OF THE ISOLATED HELIUM AT THE PRESSURE OF THE ISOLATED SYSTEM; COMPRESSING SAID CONFINED PORTION TO A SPECIFIC VOLUME; MEASURING THE PRESSURE DEVELOPED AGAINST A VACUUM BY SAID COMPRESSED SPECIFIC VOLUME; EXPANDING SAID SPECIFIC VOLUME TO THE VOLUME OF THE ORIGINALLY ISOLATED SYSTEM; CONFINING THEREFROM A SECOND PORTION OF HELIUM AT THE PRESSURE OF THE EXPANDED HELIUM AND EQUAL TO THE PORTION CONFINED FOR THE FIRST COMPRESSION; COMPRESSING SAID SECOND CONFINED PORTION TO THE SAME SPECIFIC VOLUME TO WHICH SAID FIRST COMPRESSION WAS MADE, AND MEASURING THE PRESSURE DEVELOPED AGAINST A VACUUM BY SAID COMPRESSED SECOND PORTION OF HELIUM WHERERBY THE HELIUM CONTENT OF THE GAS MIXTURE CAN BE CALCULATED BY THE EQUATION:
Claim 2
Independent Claim
166 words
THE METHOD FOR THE QUANTITATIVE DETERMINATION OF HELIUM IN A SAMPLE OF KNOWN VOLUME OF A HELIUM CONTAINING GAS MIXTURE UNDER KNOWN CONDITIONS OF TEMPERATURE AND PRESSURE WHICH COMPRISES THE STEPS OF ADSORBING NON-HELIUM COMPONENTS FROM SAID GAS MIXTURE; ISOLATING THE RESIDUAL HELIUM IN A SYSTEM OF CONSTANT VOLUME; CONFINING A FIXED PORTION OF THE ISOLATED HELIUM AT THE PRESSURE OF THE ISOLATED SYSTEM; COMPRESSING SAID CONFINED PORTION TO A SPECIFIC VOLUME; MEASURING THE PRESSURE DEVELOPED AGAINST A VACUUM BY SAID COMPRESSED SPECIFIC VOLUME; EXPANDING SAID SPECIFIC VOLUME TO THE VOLUME OF THE ORIGINALLY ISOLATED SYSTEM; CONFINING THEREFROM A SECOND PORTION OF HELIUM AT THE PRESSURE OF THE EXPANDED HELIUM AND EQUAL TO THE PORTION CONFINED FOR THE FIRST COMPRESSION; COMPRESSING SAID SECOND CONFINED PORTION TO THE SAME SPECIFIC VOLUME TO WHICH SAID FIRST COMPRESSION WAS MADE, AND MEASURING THE PRESSURE DEVELOPED AGAINST A VACUUM BY SAID COMPRESSED SECOND PORTION OF HELIUM WHERERBY THE HELIUM CONTENT OF THE GAS MIXTURE CAN BE CALCULATED BY THE EQUATION:
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) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |