US3129062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame ionization detector
Assignee: Shell USA Inc
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Filing: 1961-05-02
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Granted: 1964-04-14
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Expires: 1981-05-02
Abstract
No abstract record available.
Inventors
- 👤 Ongkiehong Leo
- 👤 Bijl Aart
- 👤 Schuringa Albertus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:05
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/62; G01N30/64; G01N30/68; G01N27/00; G01N27/62; G01N27/626
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A FLAME IONIZATION TYPE OF DETECTOR SYSTEM FOR ANALYSIS OF GASES OBTAINED BY A CHROMATOGRAPAHIC SEPARATION COMPRISING: A DETECTOR HAVING A FIRST ELECTRODE; A BURNER ASSEMBLY, SAID BURNER ASSEMBLY FORMING A SECOND ELECTRODE A CONTROL ELECTRODE DISPOSED BETWEEN SAID FIRST AND SECOND ELECTRODE; A SOURCE OF ALTERNATING VOLTAGE COUPLED TO SAID CONTROL ELECTRODE AND SAID SECOND ELECTRODE; A SOURCE OF DIRECT VOLTAGE COUPLED TO SAID FIRST AND SECOND ELECTRODES AND AN ALTERNATING VOLTAGE AMPLIFIER COUPLED TO SAID FIRST AND SECOND ELECTRODES TO DETECT THE SIGNAL APPEARING ACROSS SAID FIRST AND SECOND ELECTRODES.
Claim 2
Dependent Claim
92 words
A FLAME IONIZATION TYPE OF DETECTOR SYSTEM FOR ANALYSIS OF GASES OBTAINED BY A CHROMATOGRAPAHIC SEPARATION COMPRISING: A DETECTOR HAVING A FIRST ELECTRODE; A BURNER ASSEMBLY, SAID BURNER ASSEMBLY FORMING A SECOND ELECTRODE A CONTROL ELECTRODE DISPOSED BETWEEN SAID FIRST AND SECOND ELECTRODE; A SOURCE OF ALTERNATING VOLTAGE COUPLED TO SAID CONTROL ELECTRODE AND SAID SECOND ELECTRODE; A SOURCE OF DIRECT VOLTAGE COUPLED TO SAID FIRST AND SECOND ELECTRODES AND AN ALTERNATING VOLTAGE AMPLIFIER COUPLED TO SAID FIRST AND SECOND ELECTRODES TO DETECT THE SIGNAL APPEARING ACROSS SAID FIRST AND SECOND ELECTRODES.
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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |