US3572996A
Expired / Lapsed
US
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Analytical chromatography column monitoring system
Assignee: Technicon Corp
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Filing: 1967-11-29
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Granted: 1971-03-30
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Expires: 1987-11-29
Abstract
Abstract A CHROMATOGRAPHY APPARATUS FOR THE SEQUENTIAL AUTOMATIC LOADING AND ANALYSIS OF A PLURALITY OF SAMPLES INCLUDES A HIGH PRESSURE, NON-RETURN, RELIEF VALVE IN THE HIGH PRESSURE PORTION OF THE SYSTEM, AND A BUBBLE DETECTOR IN THE COLORIMETER, FOR DETECTING SYSTEM MALFUNCTIONS AND PROVIDING A SIGNAL IN REPONSE THERETO. D R A W I N G
Inventors
- 👤 Allen S Reichler
- 👤 Nelson G Kling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:51
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/80; G01N30/82; G01N30/04; G01N30/24; G01N30/62; G01N30/74
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |