US2991158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the analysis and/or detection of substances by gas chromatography
Assignee: Individual
•
Filing: 1958-11-12
•
Granted: 1961-07-04
•
Expires: 1978-11-12
Abstract
No abstract record available.
Inventors
- 👤 Harley John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:22
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/62; G01N30/64; G01N30/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A DETECTOR FOR USE IN CONJUNCTION WITH APPARATUS FOR ANALYZING SUBSTANCES BY GAS CHROMATOGRAPHY INCLUDING THE COMBINATION OF A PAIR OF SPACED ELECTRODES, A CHAMBER SURROUNDING THE SPACED ELECTRODES MEANS FOR INTRODUCING COMBUSTIBLE GAS BETWEEN THE SPACED ELECTRODES TO FORM A FLAME, MEANS FOR INTRODUCING OXYGEN INTO SAID CHAMBER FOR SUPPORTING THE COMBUSTION OF SAID GAS, MEANS FOR INTRODUCING SAMPLES OF A SUBTANCE TO BE ANALYZED INTO THE FRAME, AND AN INDUCATING DEVICE COUPLED TO THE PAIR OF ELECTRODES FOR SENSING CHANGES IN IONIZATION OCCURRING WITHIN THE FLAME WHEREBY VARIATIONS IN THE CONDUCTIVITY OF THE FLAME PRODUCEC BY SUBSTANCES INTRODUCED INTO THE FLAME MAY BE DETERMINED.
Claim 2
Dependent Claim
106 words
A DETECTOR FOR USE IN CONJUNCTION WITH APPARATUS FOR ANALYZING SUBSTANCES BY GAS CHROMATOGRAPHY INCLUDING THE COMBINATION OF A PAIR OF SPACED ELECTRODES, A CHAMBER SURROUNDING THE SPACED ELECTRODES MEANS FOR INTRODUCING COMBUSTIBLE GAS BETWEEN THE SPACED ELECTRODES TO FORM A FLAME, MEANS FOR INTRODUCING OXYGEN INTO SAID CHAMBER FOR SUPPORTING THE COMBUSTION OF SAID GAS, MEANS FOR INTRODUCING SAMPLES OF A SUBTANCE TO BE ANALYZED INTO THE FRAME, AND AN INDUCATING DEVICE COUPLED TO THE PAIR OF ELECTRODES FOR SENSING CHANGES IN IONIZATION OCCURRING WITHIN THE FLAME WHEREBY VARIATIONS IN THE CONDUCTIVITY OF THE FLAME PRODUCEC BY SUBSTANCES INTRODUCED INTO THE FLAME MAY BE DETERMINED.
References Cited (Backward Citations)
US2112736A
Cited
US2343001A
Cited
US2324821A
Cited
US2622967A
Cited
US2511177A
Cited
GB790217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |