US3567328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Specimen transport mount for spectrophotometer
Assignee: Individual
•
Filing: 1966-06-02
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Granted: 1971-03-02
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Expires: 1986-06-02
Abstract
Abstract SPECTROPHOTOMETRIC ANALYSES OF SPECIMENS WHICH HAVE BEEN PROCESSED BY "DENSITY GRADIENT CENTRIFUGATION" CAN BE PERFORMED BY THE APPARATUS DISCLOSED HEREIN WITHOUT HAVING TO WITHDRAW FRACTIONS OF THE MATERIAL FROM THE SPECIMEN TUBES FOR SEPARATE ANALYSIS. THE APPARATUS CONSTITUTES AN ATTACHMENT FOR A CONVENTIONAL SPECTROPHOTOMETER AND TRANSPORTS THE SPECIMENS IN A SPECIMEN TUBE THROUGH THE SPECTROPHOTOMETER''S BEAM OF LIGHT IN A CONTROLLED SCANNING MOVEMENT PARALLEL TO AN ESTABLISHED DENSITY GRADIENT IN THE SPECIMEN.
Inventors
- 👤 Vernon T Riley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:20
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/04; G; G01; G01N; G01N21/00; G01N21/01; G01N21/03; G01N21/07
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |