US3563708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the assay of 3-carbalkoxy-4-hydroxyquinolines
Assignee: Richardson Vicks Inc
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Filing: 1968-05-29
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Granted: 1971-02-16
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Expires: 1988-05-29
Abstract
Abstract THE USE OF LOWE ALIPHATIC ALCOHOLS CONTAINING CATIONS OF THE ALKALINE EARTH METAL GROUP IN THE EXTRACTION OF 3CARBALKOXY-4-HYDROQUINOLINES FROM ANIMAL FEEDS AND TISSUES IMPROVES THE EXTRACTABILITY THEREOF, INCREASES THE INTENSITY OF THE FLUORESCENCE WHEN SUCH SOLUTIONS ARE SUBJECTED TO AN ACTIVATING LIGHT, AND INCREASES THE SPREAD BETWEEN THE WAVELENGTH OF THE ACTIVATING LIGHT AND THE FLUORESCENT RESPONSE THUS MAKING IT POSSIBLE TO GREATLY SIMPLIFY THE PHOTOFLUOROMETRIC ASSAY PROCEDURE.
Inventors
- 👤 Loyal R Stone
- 👤 William H Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:45
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/48; C07D215/54; C07D215/56; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/281; B01J20/282; B01J2220/00; B01J2220/50; B01J2220/54; Y; Y10; Y10T; Y10T436/00; Y10T436/14; Y10T436/145555
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |