Patent US3770631A successfully refreshed from Google Patents.
US3770631A
Expired / Lapsed
US
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Clarification of blood serum and plasma
Assignee: Baxter International Inc
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Filing: 1971-06-29
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Granted: 1973-11-06
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Expires: 1991-06-29
Abstract
Abstract A METHOD OF CLARIFYING BLOOD SERUM AND PLASMA TO REMOVE UNDESIRED PROTEINACEOUS AMD LIPID PARTICULATE MATTER WHICH COMPRISES ADMIXING THE SERUM OR PLASMA WITH FROM GREATER THAN ABOUT 20% TO ABOUT 30% OF BLOCK COPOLYMERS OF ETHYLENE OXIDE AND POLYOXYPROPYLENE POLYMER.
Inventors
- 👤 L Fekete
- 👤 F Peetoom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:09
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; A; A61; A61K; A61K35/00; A61K35/12; A61K35/14; A61K35/16; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/80; G01N33/96; G01N2496/00; G01N2496/05; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/829; Y10S530/83
Claims Analysis
Total Claims: 0
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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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |