Patent US3118300A successfully refreshed from Google Patents.
US3118300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid sampling apparatus for gas chromatography
Assignee: —
•
Filing: —
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Granted: 1964-01-21
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Expires: 1981-01-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:07
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/04; G01N30/06; G01N30/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A METHOD OF INTRODUCING SMALL SAMPLES OF LIQUID INTO A CARRIER GAS FOR PASSAGE THROUGH A GAS CHROMATOGRAPH COLUMN, COMPRISING THE STEPS OF FIRST FILLING A CAPILLARY TUBE WITH A QUANTITY OF THE LIQUID, THEN ALMOST COMPLETELY DISCHARGING THE LIQUID FROM SAID TUBE TO LEAVE A RESIDUE COATING THE WALLS OF SAID TUBE, INTRODUCING SAID TUBE WITH SAID RESIDUE COATING THE WALLS THEREOF AND FORMING THE SAMPLE INTO THE GAS STREAM PASSING THROUGH TO THE CHROMATOGRAPH COLUMN, AND APPLYING HEAT TO SAID SAMPLE SO THAT THE GAS COMPLETELY REMOVES THE SAMPLE FROM THE WALLS OF THE CAPILLARY TUBE.
Claim 2
Independent Claim
98 words
A METHOD OF INTRODUCING SMALL SAMPLES OF LIQUID INTO A CARRIER GAS FOR PASSAGE THROUGH A GAS CHROMATOGRAPH COLUMN, COMPRISING THE STEPS OF FIRST FILLING A CAPILLARY TUBE WITH A QUANTITY OF THE LIQUID, THEN ALMOST COMPLETELY DISCHARGING THE LIQUID FROM SAID TUBE TO LEAVE A RESIDUE COATING THE WALLS OF SAID TUBE, INTRODUCING SAID TUBE WITH SAID RESIDUE COATING THE WALLS THEREOF AND FORMING THE SAMPLE INTO THE GAS STREAM PASSING THROUGH TO THE CHROMATOGRAPH COLUMN, AND APPLYING HEAT TO SAID SAMPLE SO THAT THE GAS COMPLETELY REMOVES THE SAMPLE FROM THE WALLS OF THE CAPILLARY TUBE.
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) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |