US3682586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the determination of creatinine body fluids
Assignee: Adaltis US Inc
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Filing: 1971-03-10
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Granted: 1972-08-08
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Expires: 1991-03-10
Abstract
Abstract AN AUTOMATED REACTION RATE METHOD FOR THE DETERMINATION OF CREATININE IN BODY FLUIDS. THE PROCESS EMPLOYS REACTING THE CREATININE-CONTAINING FLUID WITH PICRATE IN AN ALKALINE SOLUTION AND THEREAFTER MEASURING THE REACTION RATE WITHIN A SPECIFIED TIME INTERVAL AFTER THE REACTION COMMENCES BY MEANS OF A CENTRIFUGAL ANALYTICAL PHOTOMETER. INASMUCH AS A LINEAR RELATIONSHIP EXISTS BETWEEN THE CREATININE CONCENTRATION AND THE INITIAL CHANGE OF ABSORBANCE, THE CONCENTRATION IN AN UNKNOWN SAMPLE CAN BE CONVENIENTLY CALCULATED BY COMPARISON WITH THE RESULTS OBTAINED FROM THE SIMULTANEOUS MEASUREMENT OF A SAMPLE OF KNOWN CONCENTRATION.
Inventors
- 👤 Gehard Ertingshausen
- 👤 Diane L Fabiny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:51
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/70; Y; Y10; Y10T; Y10T436/00; Y10T436/14; Y10T436/145555; Y10T436/147777
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |