US3318451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin-layer chromatographic chamber and support device
Assignee: Eastman Kodak Co
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Filing: 1965-06-14
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Granted: 1967-05-09
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Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 Edwin P Przybylowicz
- 👤 Albert D Baitsholts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:19
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/90; G01N30/94
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A FLEXIBLE CHROMATOGRAPHIC ELEMENT CHAMBER AND SUPPORT DEVICE COMPRISING: A TRAY FOR CONTAINING AN ELUANT SOLVENT; A PAIR OF SUPPORT PLATES HAVING INNER SURFACE LAYERS AND RAISED MATING EDGES FOR SEALING THE ELEMENT IN A THIN VOLUME OPEN ALONG ONE EDGE; MEANS FOR SUPPORTING SAID PLATES WITH THE OPEN EDGE IN SAID TRAY WHILE MAINTAINING SAID MATING EDGES IN ENGAGEMENT; AND MEANS CO-OPERATING WITH SAID PLATES FOR SUPPORTING SAID ELEMENT THEREBETWEEN SO THAT AT LEAST THE MAJOR PORTION OF ITS ADSORBENT SURFACE DOES NOT ENGAGE EITHER OF SAID LAYERS THEREBY PREVENTING FLOODING THEREOF.
Claim 2
Dependent Claim
93 words
A FLEXIBLE CHROMATOGRAPHIC ELEMENT CHAMBER AND SUPPORT DEVICE COMPRISING: A TRAY FOR CONTAINING AN ELUANT SOLVENT; A PAIR OF SUPPORT PLATES HAVING INNER SURFACE LAYERS AND RAISED MATING EDGES FOR SEALING THE ELEMENT IN A THIN VOLUME OPEN ALONG ONE EDGE; MEANS FOR SUPPORTING SAID PLATES WITH THE OPEN EDGE IN SAID TRAY WHILE MAINTAINING SAID MATING EDGES IN ENGAGEMENT; AND MEANS CO-OPERATING WITH SAID PLATES FOR SUPPORTING SAID ELEMENT THEREBETWEEN SO THAT AT LEAST THE MAJOR PORTION OF ITS ADSORBENT SURFACE DOES NOT ENGAGE EITHER OF SAID LAYERS THEREBY PREVENTING FLOODING THEREOF.
References Cited (Backward Citations)
US3067132A
Cited
US3189541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |