US3321628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baseline stabilization system for ionization detector
Assignee: Individual
•
Filing: 1964-09-18
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Granted: 1967-05-23
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Expires: 1984-09-18
Abstract
No abstract record available.
Inventors
- 👤 James E Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:44
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/30; H03F1/303; G; G01; G01T; G01T1/00; G01T1/16; G01T1/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
IN A SYSTEM FOR OBTAINING A CHROMATOGRAPH FROM A GAS SAMPLE WHEREIN AN IONIZATION DETECTOR IS EMPLOYED AND ITS OUTPUT IS APPLIED TO THE INPUT OF AN ELECTROMETER AMPLIFIER WHICH HAS AN OUTPUT, APPARATUS FOR STABILIZING THE BASELINE OUTPUT OF SAID IONIZATION DETECTOR PRIOR TO THE MEASUREMENT OF SAID GAS SAMPLE COMPRISING A NETWORK COUPLING THE OUTPUT OF SAID ELECTROMETER AMPLIFIER TO THE OUTPUT OF SAID IONIZATION DETECTOR INCLUDING A COMPARATOR AMPLIFIER HAVING ITS INPUT CONNECTED TO THE OUTPUT OF SAID ELECTROMETER AMPLIFIER, SWITCH MEANS HAVING AN OPEN AND CLOSED POSITION, RESISTOR MEANS CONNECTING THE OUTPUT OF SAID COMPARATOR AMPLIFIER TO SAID SWITCH MEANS, STORAGE CAPACITOR MEANS CONNECTED TO THE OUTPUT OF SAID COMPARATOR AMPLIFIER WHEN SAID SWITCH MEANS IS IN ITS CLOSED POSITION, MEANS CONNECTING SAID STORAGE CAPACITOR MEANS TO THE OUTPUT OF SAID IONIZATION DETECTOR, MEANS OPERATING SAID SWITCH MEANS TO ITS CLOSED POSITION FOR CHARGING SAID CAPACITOR MEANS TO A VOLTAGE FOR BUCKING OUT THE QUIESCENT OUTPUT OF SAID IONIZATION DETECTOR PRIOR
Claim 2
Dependent Claim
165 words
IN A SYSTEM FOR OBTAINING A CHROMATOGRAPH FROM A GAS SAMPLE WHEREIN AN IONIZATION DETECTOR IS EMPLOYED AND ITS OUTPUT IS APPLIED TO THE INPUT OF AN ELECTROMETER AMPLIFIER WHICH HAS AN OUTPUT, APPARATUS FOR STABILIZING THE BASELINE OUTPUT OF SAID IONIZATION DETECTOR PRIOR TO THE MEASUREMENT OF SAID GAS SAMPLE COMPRISING A NETWORK COUPLING THE OUTPUT OF SAID ELECTROMETER AMPLIFIER TO THE OUTPUT OF SAID IONIZATION DETECTOR INCLUDING A COMPARATOR AMPLIFIER HAVING ITS INPUT CONNECTED TO THE OUTPUT OF SAID ELECTROMETER AMPLIFIER, SWITCH MEANS HAVING AN OPEN AND CLOSED POSITION, RESISTOR MEANS CONNECTING THE OUTPUT OF SAID COMPARATOR AMPLIFIER TO SAID SWITCH MEANS, STORAGE CAPACITOR MEANS CONNECTED TO THE OUTPUT OF SAID COMPARATOR AMPLIFIER WHEN SAID SWITCH MEANS IS IN ITS CLOSED POSITION, MEANS CONNECTING SAID STORAGE CAPACITOR MEANS TO THE OUTPUT OF SAID IONIZATION DETECTOR, MEANS OPERATING SAID SWITCH MEANS TO ITS CLOSED POSITION FOR CHARGING SAID CAPACITOR MEANS TO A VOLTAGE FOR BUCKING OUT THE QUIESCENT OUTPUT OF SAID IONIZATION DETECTOR PRIOR
References Cited (Backward Citations)
US2768247A
Cited
US3131349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |