US3355367A
Expired / Lapsed
US
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Method and apparatus for chromatographic moisture analysis
Assignee: Consolidated Electrodynamics Corp
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Filing: 1964-08-10
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Granted: 1967-11-28
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Expires: 1984-08-10
Abstract
No abstract record available.
Inventors
- 👤 Roger F Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:18
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/26; G01N33/28; G01N33/2835; G01N33/2847; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/40
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
A PROCESS FOR DETERMINING THE AMOUNT OF WATER PRESENT IN LIQUID HYDROCARBONS COMPRISING THE STEPS OF: VAPORIZING A SAMPLE OF THE WATER-BEARING LIQUID HYDROCARBONS, PASSING THE VAPORIZED SAMPLE WITH AN INERT CARRIER GAS WHICH HAS BEEN PRE-WETTED WITH A PREDETERMINED AMOUNT OF MOISTRUE TO A SUITABLE CHROMATOGRAPHIC COLUMN, AND SUBSTITUTING THE INERT CARRIER GAS FOR HYDROCARBONS BY PASSING THE SAMPLE THERETHROUGH, SELECTIVELY FLOWING THE WATER AND INERT CARRIER GAS FROM THE COLUMN TO AN ELECTROLYTIC CELL HASING A PAIR OF ELECTRODES BRIDGED BY A FILM OF HYGROSCOPIC MATERIAL INTERIORLY OF THE CELL, AND IMPRESSING AN ELECTRIC POTENTIAL ACROSS THE CELL ELECTRODES TO ELECTROLYZE MOISTURE ABSORBED BY THE HYGROSCOPIC MATERIAL.
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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |