US3695003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas chromatography method and apparatus
Assignee: Texaco Inc
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Filing: 1970-09-10
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Granted: 1972-10-03
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Expires: 1990-09-10
Abstract
Abstract A gas chromatograph which divides the effluent stream from its column into two portions. One portion is for obtaining a conventional record with peaks which indicate the various compounds in the effluent of the colunn. The other portion of the divided effluent is directed through a nozzle and against a strip, that may be coated, for retaining the effluent while the strip is moved in synchronism with the conventional record. The strip may be matched against the record afterward so that individual peaks may be identified by direct analysis of the trapped effluent on the strip.
Inventors
- 👤 Valery N Bednarski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:00
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/80; G01N30/82; G01N2030/022; G01N2030/025; G01N30/84; G01N2030/8411; G01N2030/8417; G01N30/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
The invention according to claim 1, further including the step of analyzing said retained components to identify them.
Claim 2
Dependent Claim
157 words
In gas chromatography wherein a fluid mixture is separated into components by passage through a column which delays the passage of some of the components more than others, the combination comprising means for making a chromatograph having peaks for said components, means for dividing the output of said column into at least two branches one for use in making said chromatogram, a nozzle connected to the other of said branches, a strip of aluminum foil having a thin coating of silica gel thereon, a wheel having a flat perimeter for attaching said coated strip thereon, said wheel being located with said perimeter close to said nozzle for directing the effluent from said column against the surface thereof with said strip thereon, said wheel having a predetermined diameter, and means for driving said wheel in synchronism with said chromatogram whereby said fluid components trapped in said thin coating may be directly matched with said peaks on said chromatogram.
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |