US3100737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing a plasma protein solution free of active hepatitis virus and product produced thereby
Assignee: Individual
•
Filing: 1961-11-02
•
Granted: 1963-08-13
•
Expires: 1981-11-02
Abstract
No abstract record available.
Inventors
- 👤 Auerswald Wilhelm
- 👤 Eibl Johann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:48
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/02; A61L2/04; A61L2103/00; A61L2103/05; A61L2103/09; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/829; Y10S530/83
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A METHOD OF PREPARING A HEAT-STABLE PLASMA PROTEIN SOLUTION FREE OF ACTIVE HEPATITIS VIRUS FROM HUMAN THE INORGANIC NEUTRAL SALT CONTAINED IN THE REMAINING SOLUTION, TREATING THE SEPARATED HEAT-STABLE PROTEINS TO PLASMA COMPRISING ADDING TO THE PLASMA A SOLUBLE INORGANIC NEUTRAL SALT AND A MONOBASIC FATTY ACID SELECTED OBTAIN A SOLUTION HAVING A CONTENT OF 2 TO 10 PERCENT OF PROTEINS, AJUSTING THE PH VALUE OF THIS SOLUTION TO FROM FATTY ACIDS HAVING 12 TO 18 CARBON ATOMS, HEATING THE MIXTURE TO A TEMPERATURE ABOUT 55*C. AT A PH 7.0 TO 7.2, AND TREATING THE HEAT-STABLE PROTEIN FRACTION VALUE OF ABOUT 5.2, PRECIPITATING THEREBY ALL PROTEIN CONTAINED IN THE RESULTING SOLUTION IN THE PRESENCE OF A STABILIZER AT A TEMPERATURE OF ABOUT 60*C. DURING FRACTIONS BEING UNSTABLE AT SAID TEMPERATURE, REMOVING THE PRECIPITATE, SEPARATING THE HEAT-STABLE PROTEINS FROM A PERIOD OF ABOUT 10 HOURS.
Claim 2
Independent Claim
144 words
A METHOD OF PREPARING A HEAT-STABLE PLASMA PROTEIN SOLUTION FREE OF ACTIVE HEPATITIS VIRUS FROM HUMAN THE INORGANIC NEUTRAL SALT CONTAINED IN THE REMAINING SOLUTION, TREATING THE SEPARATED HEAT-STABLE PROTEINS TO PLASMA COMPRISING ADDING TO THE PLASMA A SOLUBLE INORGANIC NEUTRAL SALT AND A MONOBASIC FATTY ACID SELECTED OBTAIN A SOLUTION HAVING A CONTENT OF 2 TO 10 PERCENT OF PROTEINS, AJUSTING THE PH VALUE OF THIS SOLUTION TO FROM FATTY ACIDS HAVING 12 TO 18 CARBON ATOMS, HEATING THE MIXTURE TO A TEMPERATURE ABOUT 55*C. AT A PH 7.0 TO 7.2, AND TREATING THE HEAT-STABLE PROTEIN FRACTION VALUE OF ABOUT 5.2, PRECIPITATING THEREBY ALL PROTEIN CONTAINED IN THE RESULTING SOLUTION IN THE PRESENCE OF A STABILIZER AT A TEMPERATURE OF ABOUT 60*C. DURING FRACTIONS BEING UNSTABLE AT SAID TEMPERATURE, REMOVING THE PRECIPITATE, SEPARATING THE HEAT-STABLE PROTEINS FROM A PERIOD OF ABOUT 10 HOURS.
References Cited (Backward Citations)
US2765299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |