US3682881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionation of plasma using glycine and polyethylene glycol
Assignee: Baxter International Inc
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Filing: 1970-10-02
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Granted: 1972-08-08
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Expires: 1990-10-02
Abstract
Abstract CONCENTRATES OF ANTIHEMIPHILIC FACTOR A AND PROTHROMBIN COMPLEX ARE PREPARED FROM CITRATED BLOOD PLASMA BY AN INITIAL FRACTIONATION WITH GLYCINE FOLLOWED BY MULTIPLE FRACTIONATIONS OF THE AHF-CONTAINING PRECIPITATE AND THE PROTROMBIN COMPLEX-CONTAINING SUPERNATE WITH POLYETHYLENE GLYCOL, THE AHF-CONTAINING FRACTION BEING GIVEN AN ADDITIONAL FRACTIONATION WITH GLYCINE AND THE PROTHROMBIN COMPLEX-CONTAINING FRACTION BEING GIVEN AN INTERMEDIATE ADSORPTION WITH TRIBASIC CALCIUM PHOSPHATE.
Inventors
- 👤 Lajos F Fekete
- 👤 Edward Shanbrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:22
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/48; C12N9/50; C12N9/64; C12N9/6421; C12N9/6424; C12N9/6429; C07; C07K; C07K14/00; C07K14/435; C07K14/745; C07K14/755; C12Y; C12Y304/00; C12Y304/21; C12Y304/21005; A; A61; A61K; A61K38/00; 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) | 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 |