US3076798A
Expired / Lapsed
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Process for preparing a ferric hydroxide polymaltose complex
Assignee: Vifor International AG
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Filing: 1961-02-23
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Granted: 1963-02-05
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Expires: 1981-02-23
Abstract
No abstract record available.
Inventors
- 👤 Mueller Arthur
- 👤 Schwarz Heinrich
- 👤 Bersin Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:26
CPC Classifications
C; C08; C08B; C08B31/00; A; A61; A61K; A61K31/00; A61K31/28; A61K31/295; A61K33/00; A61K33/24; A61K33/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS OF PRODUCING A THERAPEUTICALLY USEFUL FERRIC HYDROXIDE-POLYMALTOSE COMPLEX WHICH COMPRISES MIXING AN AQUEOUS MEDIUM OF A WATER-SOLUBLE NON-RETROGRADING DEXTRIN HAVING AN AVERAGE INTRINSIC VISCOSITY AT 25*C. OF FROM ABOUT 0.025 TO 0,075 WITH AN AQUEOUS SOLUTION CONTAINING FERRIC IONS AND AN EXCESS OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALI HYDROXIDES AND ALKALI CARBONATES AND HEATING THE REACTION MIXTURE TO A TEMPERATURE OF FROM 60 TO 100*C. TO FORM A FERRIC HYDROXIDEPOLYMALTOSE COMPLEX AND RECOVERING SAID COMPLEX.
Claim 2
Dependent Claim
81 words
A PROCESS OF PRODUCING A THERAPEUTICALLY USEFUL FERRIC HYDROXIDE-POLYMALTOSE COMPLEX WHICH COMPRISES MIXING AN AQUEOUS MEDIUM OF A WATER-SOLUBLE NON-RETROGRADING DEXTRIN HAVING AN AVERAGE INTRINSIC VISCOSITY AT 25*C. OF FROM ABOUT 0.025 TO 0,075 WITH AN AQUEOUS SOLUTION CONTAINING FERRIC IONS AND AN EXCESS OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALI HYDROXIDES AND ALKALI CARBONATES AND HEATING THE REACTION MIXTURE TO A TEMPERATURE OF FROM 60 TO 100*C. TO FORM A FERRIC HYDROXIDEPOLYMALTOSE COMPLEX AND RECOVERING SAID COMPLEX.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |