Patent US3578757A successfully refreshed from Google Patents.
US3578757A
Expired / Lapsed
US
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Chromatograph for determination of admixtures in gases
Assignee: Individual
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Filing: 1968-07-12
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Granted: 1971-05-18
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Expires: 1988-07-12
Abstract
Abstract A chromatograph for the determination of admixtures in gases, comprises a chromatographic column bent in the form of at least a single helix coil or an arc of circle and which is rigidly secured on the shaft of a drive device in a plane perpendicular to the axis of the shaft. The shaft is mounted in stationary supports so that at the same time one portion of the chromatographic column is immersed in a refrigerant bath and the other portion of the column is in a heater, and during the rotation of the shaft said portions of the column subsequently pass through the cooling and heating zones.
Inventors
- 👤 Viktor Ivanovich Samuilov
- 👤 Jury Markovich Genkin
- 👤 Maria Dmitrievna Suvorova
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:28
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/60; G01N30/6052; G01N30/26; G01N30/28; G01N30/30; G01N30/6047
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
13 words
A chromatograph as claimed in claim 1, wherein said coil is substantially circular.
Claim 2
Dependent Claim
12 words
A chromatograph as claimed in claim 1, wherein said coil is helical.
Claim 3
Dependent Claim
65 words
A chromatograph as claimed in claim 1, wherein said support means includes a shaft to which said chromatographic column is fixedly connected, and stationary end supports, said shaft including opposite end portions rotatably supported one in one of each of said end supports, said inlet and outlet channels of said support means extending respectively from a respective one of said end supports to said shaft.
Claim 4
Dependent Claim
19 words
A chromatograph as claimed in claim 1, wherein said heater means includes a substantially U-shaped member embracing said coil.
Claim 5
Dependent Claim
21 words
A chromatograph as claimed in claim 1, wherein said refrigerant means includes a liquid refrigerant bath wherein said coil is immersed.
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |