US3669554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for analyzing chromatographic disk in a spectrophotometer
Assignee: Inst De Virusologie Stefan S N
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Filing: 1970-07-29
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Granted: 1972-06-13
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Expires: 1990-07-29
Abstract
Abstract THE INVENTION REFERS TO A DEVICE ADAPTABLE TO COMMON SINGLE- OR DOUBLE-BEAM SPECTROPHOTOMETERS, WHICH PERMITS SERIAL DETERMINATION OF SUBSTANCES IMPREGNATED ON DISKS, AND WHICH CONSISTS IN A MECHANISM FOR CHANGING AND CENTERING OF THE DISKS MOUNTED IN A HOLDER WITHIN THE CELL COMPARTMENT OF THE SPECTROPHOTOMETER. A MANUALLY OR AN AUTOMATIC SAMPLE CHANGE IS MADE FROM WITHIN OR WITHOUT OF THE CELL COMPARTMENT OF THE SPECTROPHOTOMETER. THE CONTROL DISK IS MOUNTED IN THE MOBILE HOLDER, WHICH CAN BE ADAPTED TO THE SAMPLE HOLDER OR IN FRONT OF THE REFERENCE BEAM, DEPENDING UPON THE SPECTROPHOTOMETER TYPE.
Inventors
- 👤 Oswald Horer
- 👤 Eugen Bujor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:50
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/251; G01N21/253
Claims Analysis
Total Claims: 0
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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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |