US3295296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separating columns for gas chromatography
Assignee: Applied Biosystems Inc
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Filing: 1963-10-21
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Granted: 1967-01-03
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Expires: 1983-10-21
Abstract
No abstract record available.
Inventors
- 👤 Halasz Istvan
- 👤 Horvath Csaba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:27
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/50; G01N30/56; B; B01; B01J; B01J20/00; B01J20/281; B01J20/30; B01J20/32; B01J20/3202; B01J20/3204; B01J20/3231; B01J20/3234; B01J20/3236; B01J20/324; B01J20/3242; B01J20/3268; B01J20/3272; G01N30/60; G01N30/6052; G01N30/6073; G01N30/6078; B01J2220/00; B01J2220/50; B01J2220/54; B01J2220/80; B01J2220/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS FOR FABRICATING AN ELUTION CHROMATOGRAPHY SEPARATING COLUMN FROM AN ELONGATED CAPILLARY TUBE, SAID TUBE HAVING A LAYER OF SOLID MATERIAL DISPOSED ON AN INNER SURFACE THEREOF, COMPRISING THE STEPS OF: FILLING AN ELONGATED CAPILLARY TUBE WITH A STABLE SUSPENSION, INCLUDING A DISPERSIVE LIQUID AND PARTICLES OF THE SOLID MATERIAL, CLOSING THE TUBE AT AN END THEREOF, AND EVAPORATING THE DISPERSIVE LIQUID FROM THE TUBE BY PROGRESSIVELY HEATING THE TUBE BEGINNING AT AN OPEN END THEREOF, THEREBY FORMING A SOLID POROUS LAYER ON THE INNER SURFACE OF THE TUBE.
Claim 2
Dependent Claim
90 words
A PROCESS FOR FABRICATING AN ELUTION CHROMATOGRAPHY SEPARATING COLUMN FROM AN ELONGATED CAPILLARY TUBE, SAID TUBE HAVING A LAYER OF SOLID MATERIAL DISPOSED ON AN INNER SURFACE THEREOF, COMPRISING THE STEPS OF: FILLING AN ELONGATED CAPILLARY TUBE WITH A STABLE SUSPENSION, INCLUDING A DISPERSIVE LIQUID AND PARTICLES OF THE SOLID MATERIAL, CLOSING THE TUBE AT AN END THEREOF, AND EVAPORATING THE DISPERSIVE LIQUID FROM THE TUBE BY PROGRESSIVELY HEATING THE TUBE BEGINNING AT AN OPEN END THEREOF, THEREBY FORMING A SOLID POROUS LAYER ON THE INNER SURFACE OF THE 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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |