US3097518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Column
Assignee: —
•
Filing: —
•
Granted: 1963-07-16
•
Expires: 1980-07-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:34
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/46; G01N30/461; G01N27/00; G01N27/02; G01N27/04; G01N27/14; G01N27/18; G01N27/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
229 words
GAS CHROMATOGRAPHIC APPARATUS COMPRISING, A SOURCE OF CARRIER GAS, MEANS FORMING A FLOW PATH FOR FLOWING THE CARRIER GAS OVER FIRST AND SECOND DETECTORS IN SERIES, A SAMPLE INLET CONNECTED TO THE EXIT END OF SAID MEANS BEYOND THE SECOND OF SAID TWO DETECTORS, A FIRST CHROMATOGRAPHIC COLUMN CONNECTED TO SAID SAMPLE INLET, A THIRD DETECTOR POSITIONED IN SAID FLOW PATH AT THE EXIT END OF SAID FIRST COLUMN, A SECOND CHROMATOGRAPHIC COLUMN CONNECTED TO THE EXIT END OF THE FIRST COLUMN BEYOND SAID THIRD DETECTOR, A FOURTH DETECTOR POSITIONED IN SAID FLOW PATH AT THE EXIT END OF THE SECOND COLUMN, A MEASURING BRIDGE CIRCUIT IN WHICH SAID FIRST AND SECOND DETECTORS FORM GEOMETRICALLY OPPOSING ARMS AND IN WHICH SAID THIRD AND FOURTH DETECTORS FORM GEOMETRICALLY OPPOSING ARMS, SAID FIRST AND SECOND DETECTORS INITIATING ELECTRICAL SIGNALS IN THE OUTPUT OF SAID MEASURING BRIDGE CIRCUIT WHEN CARRIER GAS ALONE FLOWS PAST THEM, AND SAID THIRD AND FOURTH DETECTORS INITIATING ELECTRICAL SIGNALS IN THE OUTPUT OF SAID MEASURING BRIDGE CIRCUIT WHEN CARRIER GAS ALONE FLOWS PAST THEM AND WHEN COMPONENTS OF THE SAMPLE FLOW PAST THEM IN THE CARRIER GAS, THE PACKING AND CAPACITY OF THE COLUMNS BEING SUCH THAT SIGNALS INITIATED BY THE DETECTORS WHEN COMPONENTS OF THE SAMPLE IN THE CARRIER GAS FLOW BY THE THIRD AND FOURTH DETECTORS ARE SPACED FROM EACH OTHER IN POINT OF TIME.
Claim 2
Dependent Claim
229 words
GAS CHROMATOGRAPHIC APPARATUS COMPRISING, A SOURCE OF CARRIER GAS, MEANS FORMING A FLOW PATH FOR FLOWING THE CARRIER GAS OVER FIRST AND SECOND DETECTORS IN SERIES, A SAMPLE INLET CONNECTED TO THE EXIT END OF SAID MEANS BEYOND THE SECOND OF SAID TWO DETECTORS, A FIRST CHROMATOGRAPHIC COLUMN CONNECTED TO SAID SAMPLE INLET, A THIRD DETECTOR POSITIONED IN SAID FLOW PATH AT THE EXIT END OF SAID FIRST COLUMN, A SECOND CHROMATOGRAPHIC COLUMN CONNECTED TO THE EXIT END OF THE FIRST COLUMN BEYOND SAID THIRD DETECTOR, A FOURTH DETECTOR POSITIONED IN SAID FLOW PATH AT THE EXIT END OF THE SECOND COLUMN, A MEASURING BRIDGE CIRCUIT IN WHICH SAID FIRST AND SECOND DETECTORS FORM GEOMETRICALLY OPPOSING ARMS AND IN WHICH SAID THIRD AND FOURTH DETECTORS FORM GEOMETRICALLY OPPOSING ARMS, SAID FIRST AND SECOND DETECTORS INITIATING ELECTRICAL SIGNALS IN THE OUTPUT OF SAID MEASURING BRIDGE CIRCUIT WHEN CARRIER GAS ALONE FLOWS PAST THEM, AND SAID THIRD AND FOURTH DETECTORS INITIATING ELECTRICAL SIGNALS IN THE OUTPUT OF SAID MEASURING BRIDGE CIRCUIT WHEN CARRIER GAS ALONE FLOWS PAST THEM AND WHEN COMPONENTS OF THE SAMPLE FLOW PAST THEM IN THE CARRIER GAS, THE PACKING AND CAPACITY OF THE COLUMNS BEING SUCH THAT SIGNALS INITIATED BY THE DETECTORS WHEN COMPONENTS OF THE SAMPLE IN THE CARRIER GAS FLOW BY THE THIRD AND FOURTH DETECTORS ARE SPACED FROM EACH OTHER IN POINT OF TIME.
References Cited (Backward Citations)
US2687036A
Cited
US2868011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |