Patent US3159996A successfully refreshed from Google Patents.
US3159996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating apparatus for chromatographic column
Assignee: Applied Biosystems Inc
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Filing: 1961-06-30
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Granted: 1964-12-08
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Expires: 1981-06-30
Abstract
No abstract record available.
Inventors
- 👤 Stanley D Norem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:05
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/28; G01N30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
VAPOR FRACTOMETER APPARATUS COMPRISING A SOURCE OF CARRIER GAS; A GLASS TUBE HAVING A PLURALITY OF BORES, A FIRST OF SAID BORES COMPRISING A FRACTOMETER SEPARATING COLUMN HAVING AN UNOBSTRUCTED PASSAGE, THE INTERNAL SURFACE OF WHICH IS OF A MATERIAL FOR WHICH THE DIFFERENT COMPONENTS OF A SAMPLE HAVE DIFFERENT AFFINITIES AND LEAST A SECOND OF SAID BORES CONTAINING A HEATING ELEMENT; FLUID PASSAGE MEANS IN FLUID FLOW CONDUCTING RELATIONSHIP BETWEEN SAID SOURCE OF CARRIER GAS AND THE INLET OF SAID SEPARATING COLUMN; SAMPLE INJECTION MEANS FOR INJECTING A SAMPLE INTO SAID CARRIER GAS; DETECTOR MEANS AT THE OUTLET OF SAID SEPARATING COLUMN FOR DETECTING THE PRESENCE OF SAMPLE COMPONENTS ELUTED FROM SAID COLUMN; AND TEMPERATURE CONTROL MEANS CONNECTED TO ACTIVATE SAID HEATING ELEMENT.
Claim 2
Dependent Claim
124 words
VAPOR FRACTOMETER APPARATUS COMPRISING A SOURCE OF CARRIER GAS; A GLASS TUBE HAVING A PLURALITY OF BORES, A FIRST OF SAID BORES COMPRISING A FRACTOMETER SEPARATING COLUMN HAVING AN UNOBSTRUCTED PASSAGE, THE INTERNAL SURFACE OF WHICH IS OF A MATERIAL FOR WHICH THE DIFFERENT COMPONENTS OF A SAMPLE HAVE DIFFERENT AFFINITIES AND LEAST A SECOND OF SAID BORES CONTAINING A HEATING ELEMENT; FLUID PASSAGE MEANS IN FLUID FLOW CONDUCTING RELATIONSHIP BETWEEN SAID SOURCE OF CARRIER GAS AND THE INLET OF SAID SEPARATING COLUMN; SAMPLE INJECTION MEANS FOR INJECTING A SAMPLE INTO SAID CARRIER GAS; DETECTOR MEANS AT THE OUTLET OF SAID SEPARATING COLUMN FOR DETECTING THE PRESENCE OF SAMPLE COMPONENTS ELUTED FROM SAID COLUMN; AND TEMPERATURE CONTROL MEANS CONNECTED TO ACTIVATE SAID HEATING ELEMENT.
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) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |