US3558522A
Expired / Lapsed
US
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Hematology control standard comprising washed red blood cells and synthetic latex particles
Assignee: Baxter International Inc
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Filing: 1969-03-05
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Granted: 1971-01-26
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Expires: 1989-03-05
Abstract
Abstract A HERMATOLOGY CONTROL STANDARD FOR THE CALIBRATION OF BLOOD CELL COUNTING APPARATUS AND A METHOD FOR THE PREPARATION THEREOF BY ADMIXING PREDETERMINED AMOUNTS OF WASHED RED BLOOD CELLS AND SYNTHETIC LATEX PARTICLES HAVING A 5 TO 15 MICRON PARTICLE SIZE RANGE IN A FLUID SUSPENSION OF A KNOWN AMOUNT OF SERUM ALBUMIN.
Inventors
- 👤 Allan L Louderback
- 👤 Young Youhne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:19
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/10; G01N15/1031; G01N15/12; G01N33/00; G01N33/48; G01N33/50; G01N33/96; G01N2333/00; G01N2333/435; G01N2333/76; G01N2333/765; G01N2496/00; G01N2496/05; G01N2496/10; Y; Y10; Y10T; Y10T436/00; Y10T436/10; Y10T436/101666; Y10T436/105831; Y10T436/107497; Y10T436/108331
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |