US3401565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid sampling apparatus for gas chromatography
Assignee: Armour and Co
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Filing: 1966-02-28
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Granted: 1968-09-17
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Expires: 1986-02-28
Abstract
No abstract record available.
Inventors
- 👤 Edward H Stoll
- 👤 Nelson E Nuding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:41
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/04; G01N30/06; G01N30/12; G01N1/00; G01N1/02; G01N1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
APPARATUS FOR TRANSFERRING A CALIBRATED VOLUME FROM A LIQUID STREAM INTO A CARRIER GAS STREAM FOR INTRODUCTION INTO A GAS CHROMATOGRAPHIC COLUMN WHICH COMPRISES A SAMPLE CHAMBER BLOCK HAVING A CAVITY FORMING THE SAMPLE CHAMBER, SAID BLOCK HAVING THROUGH PASSAGES FOR INFLUENT AND EFFLUENT LIQUID AND UPPER AND LOWER OPPOSED OPENINGS; A ROD HAVING A DEPRESSION FOR CONTAINMENT JOF SAID CALIBRATED VOLUME, SAID ROD PASSING THROUGH SAID UPPER AND LOWER OPPOSED OPENINGS; A TUBE ADJACENT TO AND ALIGNED WITH SAID LOWER OPENING; ACTUATING MEANS FOR POSITIONING SAID ROD IN AN UPPER POSITION WHEREBY SAID DEPRESSION RESIDES IN SAID SAMPLE CHAMBER AND FOR MOVING SAID ROD DOWNWARDLY CAUSING SAID DEPRESSION TO MOVE THROUGH SAID
Claim 2
Dependent Claim
113 words
APPARATUS FOR TRANSFERRING A CALIBRATED VOLUME FROM A LIQUID STREAM INTO A CARRIER GAS STREAM FOR INTRODUCTION INTO A GAS CHROMATOGRAPHIC COLUMN WHICH COMPRISES A SAMPLE CHAMBER BLOCK HAVING A CAVITY FORMING THE SAMPLE CHAMBER, SAID BLOCK HAVING THROUGH PASSAGES FOR INFLUENT AND EFFLUENT LIQUID AND UPPER AND LOWER OPPOSED OPENINGS; A ROD HAVING A DEPRESSION FOR CONTAINMENT JOF SAID CALIBRATED VOLUME, SAID ROD PASSING THROUGH SAID UPPER AND LOWER OPPOSED OPENINGS; A TUBE ADJACENT TO AND ALIGNED WITH SAID LOWER OPENING; ACTUATING MEANS FOR POSITIONING SAID ROD IN AN UPPER POSITION WHEREBY SAID DEPRESSION RESIDES IN SAID SAMPLE CHAMBER AND FOR MOVING SAID ROD DOWNWARDLY CAUSING SAID DEPRESSION TO MOVE THROUGH SAID
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) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |