US2839152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromatography method and apparatus
Assignee: Gulf Research and Development Co
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Filing: 1956-10-23
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Granted: 1958-06-17
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Expires: 1976-10-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Tracht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:43
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/04; G01N30/16; G01N30/18; B; B01; B01D; B01D15/00; B01D15/08; B01D15/10; B01D15/14; B01D15/16; B01D15/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A METHOD FOR SEPARATING FLUID MIXTURES BY PARTITION CHROMATOGRAPHY WHICH COMPRISES INJECTING A CHARGE MIXTURE TO BE SEPARATED INTO THE SELF-SEALING CHARGE INLET OF A PARTITION CHROMATOGRAPHY COLUMN, INTRODUCING CARRIER GAS INTO THE PARTITION COLUMN AT SUPER-ATMOSPHERIC INLET PRESSURE AT A POINT IMMEDIATELY BELOW THE CHARGE INLET, SIMULTANEOUSLY INTRODUCING CARRIER GAS AND MAINTAINING THE SAME SUPER-ATMOSPHERIC PRESSURE ON THE OPPOSITE SIDE OF THE CHARGE INLET FROM THE FIRST MENTIONED POINT OF INTRODUCTION OF CARRIER GAS SO AS TO PROVIDE SUBSTANTIALLY EQUAL PRESSURES ON EACH SIDE OF THE SELF-SEALING CHARGE INLET, AND WITHDRAWING AN EFFLUENT FROM THE PARTITION COLUMN COMPRISING CARRIER GAS AND SEPARATED COMPONENTS OF THE CHARGE MIXTURE.
Claim 2
Independent Claim
108 words
A METHOD FOR SEPARATING FLUID MIXTURES BY PARTITION CHROMATOGRAPHY WHICH COMPRISES INJECTING A CHARGE MIXTURE TO BE SEPARATED INTO THE SELF-SEALING CHARGE INLET OF A PARTITION CHROMATOGRAPHY COLUMN, INTRODUCING CARRIER GAS INTO THE PARTITION COLUMN AT SUPER-ATMOSPHERIC INLET PRESSURE AT A POINT IMMEDIATELY BELOW THE CHARGE INLET, SIMULTANEOUSLY INTRODUCING CARRIER GAS AND MAINTAINING THE SAME SUPER-ATMOSPHERIC PRESSURE ON THE OPPOSITE SIDE OF THE CHARGE INLET FROM THE FIRST MENTIONED POINT OF INTRODUCTION OF CARRIER GAS SO AS TO PROVIDE SUBSTANTIALLY EQUAL PRESSURES ON EACH SIDE OF THE SELF-SEALING CHARGE INLET, AND WITHDRAWING AN EFFLUENT FROM THE PARTITION COLUMN COMPRISING CARRIER GAS AND SEPARATED COMPONENTS OF THE CHARGE MIXTURE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |