US3159019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromatographic analysis method
Assignee: Phillips Petroleum Co
•
Filing: 1959-07-17
•
Granted: 1964-12-01
•
Expires: 1979-07-17
Abstract
No abstract record available.
Inventors
- 👤 Ford Donald D De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:15
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/46; G01N30/461; G01N30/28; G01N30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
THE METHOD OF ANALYZING FLUID MIXTURES WHICH COMPRISES INTRODUCING A FLUID MIXTURE CONTAINING A CONSTITUENT OF SMALL CONCENTRATION INTO THE INLET OF A FIRST ZONE WHICH CONTAINS A MATERIAL THAT SELECTIVELY RETARDS PASSAGE THERETHROUGH OF THE CONSTITUENTS OF SAID MIXTURE, INTRODUCING A CARRIER GAS INTO THE INLET OF SAID FIRST ZONE, PASSING A PART OF THE EFFLUENT FROM SAID FIRST ZONE CONTAINING SAID CONSTITUENT OF SMALL CONCENTRATION TO THE INLET OF A SECOND ZONE WHICH CONTAINS A MATERIAL THAT SELECTIVELY RETARDS PASSAGE THERETHROUGH OF THE CONSTITUENTS OF SAID MIXTURE, PROGRESSIVELY HEATING SECTIONS OF SAID SECOND ZONE FROM THE INLET THEREOF TO THE OUTLET THEREOF, PASING THE EFFLUENT FROM SAID SECOND ZONE TO THE INLET OF A THIRD ZONE WHICH CONTAINS A MATERIAL THAT SELECTIVELY RETARDS PASSAGE THEREGHTHROUGH OF THE CONSTIUENTS OF SAID MIXTURE, AND MEASURING A PROPERTY OF THE EFFLUENT FROM SAID THIRD ZONE WHICH IS REPRESENTATIVE OF THE COMPOSITION THEREOF.
Claim 2
Independent Claim
151 words
THE METHOD OF ANALYZING FLUID MIXTURES WHICH COMPRISES INTRODUCING A FLUID MIXTURE CONTAINING A CONSTITUENT OF SMALL CONCENTRATION INTO THE INLET OF A FIRST ZONE WHICH CONTAINS A MATERIAL THAT SELECTIVELY RETARDS PASSAGE THERETHROUGH OF THE CONSTITUENTS OF SAID MIXTURE, INTRODUCING A CARRIER GAS INTO THE INLET OF SAID FIRST ZONE, PASSING A PART OF THE EFFLUENT FROM SAID FIRST ZONE CONTAINING SAID CONSTITUENT OF SMALL CONCENTRATION TO THE INLET OF A SECOND ZONE WHICH CONTAINS A MATERIAL THAT SELECTIVELY RETARDS PASSAGE THERETHROUGH OF THE CONSTITUENTS OF SAID MIXTURE, PROGRESSIVELY HEATING SECTIONS OF SAID SECOND ZONE FROM THE INLET THEREOF TO THE OUTLET THEREOF, PASING THE EFFLUENT FROM SAID SECOND ZONE TO THE INLET OF A THIRD ZONE WHICH CONTAINS A MATERIAL THAT SELECTIVELY RETARDS PASSAGE THEREGHTHROUGH OF THE CONSTIUENTS OF SAID MIXTURE, AND MEASURING A PROPERTY OF THE EFFLUENT FROM SAID THIRD ZONE WHICH IS REPRESENTATIVE OF THE COMPOSITION THEREOF.
References Cited (Backward Citations)
US2826908A
Cited
US2868011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |