US3552925A
Expired / Lapsed
US
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Whole blood separation method and test using same
Assignee: Bayer Corp
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Filing: 1967-07-13
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Granted: 1971-01-05
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Expires: 1987-07-13
Abstract
Abstract A METHOD FOR SEPARATING WHOLE BLOOD INTO A SUBSTANTIALLY COLORLESS FLUID AND THE RED CELL COMPONENTS OR RESIDUE COMPRISING CONTACTING THE WHOLE BLOOD WITH A WATERSOLUBLE SALT HAVING AN INORGANIC CATION SUCH AS POTASSIUM CITRATE, AMMONIUM SULFATE, ZINC SULFATE AND THE LIKE. IN A PREFERABLE USE OF THIS MEANS TO EFFECT A TEST DEVICE AND METHOD FOR DETECHING SOLUBLE CONSTITUENTS IN WHOLE BLOOD, A MATRIX CONTAINING THE SALT IS POSITIONED ADJACENT TO A TEST REAGENT SPECIFICALLY REACTABLE WITH AND GIVING A DETECTABLE RESPONSE TO SAID SOLUBLE CONSTITUENT, THE WHOLE BLOOD FIRST BEING CONTACTED WITH THE SALT AND THE COLORLESS FLUID THUS OBTAINED THEN CONTACTED WITH THE TEST REAGENT.
Inventors
- 👤 Marion Cook Fetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:17
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/5002; C; C12; C12Q; C12Q1/00; C12Q1/54; G01N33/483; G01N33/487; G01N33/49; G01N33/491; G01N33/52; G01N33/521; Y; Y10; Y10S; Y10S435/00; Y10S435/805; Y10T; Y10T436/00; Y10T436/14; Y10T436/142222; Y10T436/143333; Y10T436/144444
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |