US2710294A
Expired / Lapsed
US
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Blood fractionation
Assignee: Olin Corp
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Filing: 1953-11-02
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Granted: 1955-06-07
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Expires: 1973-11-02
Abstract
No abstract record available.
Inventors
- 👤 Tillman D Gerlough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:38
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/435; C07K14/76; C07K14/765; C07K16/00; C07K16/06; C07K16/065; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/829; Y10S530/83; Y10S530/831
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
IN THE METHOD OF FRACTIONATING AN AQUEOUS SOLUTION OF PLASMA PROTEINS FROM WHICH THE FIBRINOGEN HAS BEEN REMOVED, THE STEP OF ADJUSTING THE SOLUTION TO A PH OF ABOUT 6.0-6.2 AND TO AN ETHANOL CONCENTRATION OF ABOUT 35-45% BY ADDITION OF COLD SUBSTANTIALLY ANHYDROUS ETHANOL, AND REMOVING THE PRECIPITATE.
Claim 2
Dependent Claim
49 words
IN THE METHOD OF FRACTIONATING AN AQUEOUS SOLUTION OF PLASMA PROTEINS FROM WHICH THE FIBRINOGEN HAS BEEN REMOVED, THE STEP OF ADJUSTING THE SOLUTION TO A PH OF ABOUT 6.0-6.2 AND TO AN ETHANOL CONCENTRATION OF ABOUT 35-45% BY ADDITION OF COLD SUBSTANTIALLY ANHYDROUS ETHANOL, AND REMOVING THE PRECIPITATE.
References Cited (Backward Citations)
US2469193A
Cited
US2437060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-06 | 1958-12-06 | 1959-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-06 | 1962-12-06 | 1963-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-06 | 1966-12-06 | 1967-06-07 | $7700.00 | Window Closed / Lapsed |