US3773921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Therapeutic compositions
Assignee: F Hoffmann La Roche AG
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Filing: 1971-11-15
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Granted: 1973-11-20
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Expires: 1991-11-15
Abstract
Abstract A THERAPEUTIC COMPOSITION HAVING SUSTAINED RELEASE PROPERTIES AND ITS USE IN VETERINARY MEDICINE IS DESCRIBED. THE COMPOSITION COMPRISES A MIXTURE OF (1) A THERAPEUTICALLY ACTIVE SULFA DRUG, (2) DIBASIC CALCIUM PHOSPHATE, (3) A BINDER AND (4) A LUBRICANT. THE COMPOSITION IS FORMULATED, BY CONVENTIONAL METHODS, INTO SOLID DOSAGE FORMS FOR ORAL ADMINISTRATION. WHEN ADMINISTERED TO RUMINANTS, E.G., CATTLE AND SHEEP, THE PRODUCT DEPOSITS ITSELF IN THE RUMEN WHERE THE ACTIVE INGREDIENT IS RELEASED SLOWLY AND CONTINUOUSLY AND ABSORBED, IN LIKE MANNER, INTO THE BLOOD STREAM.
Inventors
- 👤 P Sheth
- 👤 D Stiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:43
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0053; A61K9/0068; A23; A23K; A23K20/00; A23K20/10; A23K20/116; A23K20/137; A61K9/20; A61K9/2004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |