US3112640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromatographic analysis
Assignee: Phillips Petroleum Co
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Filing: 1960-02-15
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Granted: 1963-12-03
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Expires: 1980-02-15
Abstract
No abstract record available.
Inventors
- 👤 Albert M Platt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:49
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/62; G01N30/04; G01N2030/042; G01N2030/047; G01N2030/621; G01N2030/625
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
ANALYSIS APPARATUS COMPRISING A COLUMN FILLED WITH A MATERIAL WHICH SELECTIVELY RETARDS PASSAGE THERETHROUGH OF THE CONSITTUENTS OF A FLUID MIXTURE, MEANS TO INTRODUCE A CARRIER GAS INTO SAID COLUMN, MEANS TO INTRODUCE A FLUID SAMPLE TO BE ANALYZED INTO SAID COLUMN TO BE MOVED THERETHROUGH BY SAID CARRIER GAS, MEANS TO ESTABLISH A FIRST SIGNAL REPRESENTATIVE OF THE COMPOSITION OF THE EFFLUENT FROM SAID COLUMN, MEANS TO ESTABLISH A SECOND SIGNAL REPRESENTATIVE OF THE EFFLUENT FROM SUCH A COLUMN OF A FLUID MIXTURE ANALYZED WHICH HAS A PREDETERMINED COMPOSITION WHICH APPROXIMATES THE COMPOSITON OF SAID FLUID SAMPLE, TIMING MEANS TO ACTURATE THE REPRODUCTION OF SAID SECOND SIGNAL SIMULTANEOUSLY WITH THE ESTABLISHMENT OF SAID FIRST SIGNAL, AND MEANS TO SUBTRACT ONE OF SAID SIGNALS FROM THE OTHER TO FORM A THIRD SIGNAL, SAID THIRD SIGNAL, BEING REPRESENTATIVE OF DIFFERENCES BETWEEN THE COMPOSITION OF THE
Claim 2
Dependent Claim
144 words
ANALYSIS APPARATUS COMPRISING A COLUMN FILLED WITH A MATERIAL WHICH SELECTIVELY RETARDS PASSAGE THERETHROUGH OF THE CONSITTUENTS OF A FLUID MIXTURE, MEANS TO INTRODUCE A CARRIER GAS INTO SAID COLUMN, MEANS TO INTRODUCE A FLUID SAMPLE TO BE ANALYZED INTO SAID COLUMN TO BE MOVED THERETHROUGH BY SAID CARRIER GAS, MEANS TO ESTABLISH A FIRST SIGNAL REPRESENTATIVE OF THE COMPOSITION OF THE EFFLUENT FROM SAID COLUMN, MEANS TO ESTABLISH A SECOND SIGNAL REPRESENTATIVE OF THE EFFLUENT FROM SUCH A COLUMN OF A FLUID MIXTURE ANALYZED WHICH HAS A PREDETERMINED COMPOSITION WHICH APPROXIMATES THE COMPOSITON OF SAID FLUID SAMPLE, TIMING MEANS TO ACTURATE THE REPRODUCTION OF SAID SECOND SIGNAL SIMULTANEOUSLY WITH THE ESTABLISHMENT OF SAID FIRST SIGNAL, AND MEANS TO SUBTRACT ONE OF SAID SIGNALS FROM THE OTHER TO FORM A THIRD SIGNAL, SAID THIRD SIGNAL, BEING REPRESENTATIVE OF DIFFERENCES BETWEEN THE COMPOSITION OF THE
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) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |