US3057782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linked gelatin plasma substitute and production thereof
Assignee: Hoechst AG
•
Filing: 1959-01-19
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Granted: 1962-10-09
•
Expires: 1979-01-19
Abstract
No abstract record available.
Inventors
- 👤 Lindner Fritz
- 👤 Schmidt-Thome Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:30
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/435; C07K14/78; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6415; C08G18/6446; A; A61; A61K; A61K38/00; Y; Y10; Y10S; Y10S128/00; Y10S128/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR THE MANUFACTURE OF A SUBSTITUTE FOR BLOOD PLASMA WHEREIN GELATINE PRODUCT IS CROSS-LINKED AT A TEMPERATURE BETWEEN ABOUT 0 AND 100*C., WITH A POLYFUNCTIONAL ISOCYANATE, THE QUANTITY OF ISOCYANATE APPLIED AMOUNTING TO 20-80% OF THE QUANTITY CALUCLATED FROM THE AMOUNT OF AMINO AND GUANIDINO GROUPS PRESENT, THE THUS OBTAINED CROSS-LINKED POLYMER IS SUBJECTED TO MILD HYDROLYTICAL DEGRADATION TO A MOLECULAR WEIGHT OF 10,000-100,000 IS PREFERABLY 30,000-60,000, ANNUD THE SOLUTION OBTAINED IS MADE ISOTONIC BY ADDITION OF SODIUM CHLORIDE AND STERILIZED BY HEATING TO 120*C.
Claim 2
Dependent Claim
87 words
A PROCESS FOR THE MANUFACTURE OF A SUBSTITUTE FOR BLOOD PLASMA WHEREIN GELATINE PRODUCT IS CROSS-LINKED AT A TEMPERATURE BETWEEN ABOUT 0 AND 100*C., WITH A POLYFUNCTIONAL ISOCYANATE, THE QUANTITY OF ISOCYANATE APPLIED AMOUNTING TO 20-80% OF THE QUANTITY CALUCLATED FROM THE AMOUNT OF AMINO AND GUANIDINO GROUPS PRESENT, THE THUS OBTAINED CROSS-LINKED POLYMER IS SUBJECTED TO MILD HYDROLYTICAL DEGRADATION TO A MOLECULAR WEIGHT OF 10,000-100,000 IS PREFERABLY 30,000-60,000, ANNUD THE SOLUTION OBTAINED IS MADE ISOTONIC BY ADDITION OF SODIUM CHLORIDE AND STERILIZED BY HEATING TO 120*C.
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) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |