Patent US3158444A successfully refreshed from Google Patents.
US3158444A
Expired / Lapsed
US
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Apparatus and method for determining steam purity
Assignee: Individual
•
Filing: 1961-09-13
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Granted: 1964-11-24
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Expires: 1981-09-13
Abstract
No abstract record available.
Inventors
- 👤 Thurston E Larson
- 👤 Russell W Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:12
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/06; Y; Y10; Y10T; Y10T436/00; Y10T436/25; Y10T436/25125; Y10T436/25375; Y10T436/255
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
61 words
IN A METHOD OF DETERMINING THE PURITY OF STEAM IN WHICH A STEAM SAMPLE IS CONDENSED AND HELD AT THE BOILING POINT TO ELIMINATE CARBON DIOXIDE, THE IMPROVEMENT WHICH COMPRISES SUBJECTING SAID SAMPLE AT A CONTROLLED TEMPERATURE BELOW HALF THE BOILING POINT TEMPERATURE TO ION EXCHANGE SUFFICIENT TO REMOVE CATIONS DERIVED FROM AMMONIA AND AMINES, REBOILING THE SO-TREATED SAMPLE, AND THEN
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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |