US3633027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass spectrometer connected to a gap chromatograph through a valved molecule separator
Assignee: Pfizer Health AB
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Filing: 1970-03-30
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Granted: 1972-01-04
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Expires: 1990-03-30
Abstract
Abstract An instrument for analyzing organic chemical compounds is provided. The instrument comprises a gas chromatograph which via a molecule separator is connected to the ion source of a mass spectrometer. The separator consists of a number of series connected evacuating stages, each stage being connected to a vacuum pump. Each stage is provided with an input jet nozzle and a coaxial output nozzle, a slide being insertable between these nozzles in the first stage so as to make it possible to switch off the flow through the separator.
Inventors
- 👤 Erik Ragnar Ryhage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:18
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/62; G01N30/72; G01N30/7293; H; H01; H01J; H01J49/00; H01J49/02; H01J49/04; H01J49/0422
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
An instrument according to claim 1, characterized in that the surface of said slide element is shaped to seal the output nozzle and to provide space for leakage at the jet input nozzle when the slide element is in an inserted position.
Claim 2
Dependent Claim
29 words
An instrument according to claim 1, characterized in, that the number of stages is at least two, the last stage being combined with the housing of the ion source.
References Cited (Backward Citations)
US3080754A
Cited
US3471692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |