Patent US3332848A successfully refreshed from Google Patents.
US3332848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microcrystalline cellulose with starch in niacinamide ascorbic acid tablet granulations
Assignee: F Hoffmann La Roche AG
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Filing: 1963-07-10
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Granted: 1967-07-25
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Expires: 1983-07-10
Abstract
No abstract record available.
Inventors
- 👤 Magid Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:20
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/14; A61K9/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A GRANULATION CONSISTING OF (1) FROM ABOUT 25 PERCENT TO ABOUT 75 PERCENT BY WEIGHT OF A NIACINAMIDE-ASCORBIC ACID COMPOSITION, (2) FROM ABOUT 15.0 PERCENT TO ABOUT 30.0 PERCENT BY WEIGHT OF VEGETABLE STARCH AND (3) FROM ABOUT 5.0 PERCENT TO ABOUT 65.0 PERCENT BY WEIGHT OF MICROCRYSTALLINE CELLULOSE, SAID NIACINAMIDE-ASCORBIC ACID COMPOSITION BEING A MEMBER SELECTED FROM THE GROUP CONSISTING OF (A) A GRANULATION OF NIACINAMIDE AND ASCORBIC ACID, (B) A GRANULATION OF NIACINAMIDE AND AN ALKALI METAL SALT OF ASCORBIC ACID AND (C) A GRANULATION OF NIACINAMIDE, ASCORBIC ACID AND AN ALKALI METAL SALT OF ASCORBIC ACID, SAID NIACINAMIDEASCORBIC ACID COMPOSITION CONTAINING FROM ABOUT 10 PERCENT TO ABOUT 35 PERCENT BY WEIGHT OF NIACINAMIDE.
Claim 2
Dependent Claim
116 words
A GRANULATION CONSISTING OF (1) FROM ABOUT 25 PERCENT TO ABOUT 75 PERCENT BY WEIGHT OF A NIACINAMIDE-ASCORBIC ACID COMPOSITION, (2) FROM ABOUT 15.0 PERCENT TO ABOUT 30.0 PERCENT BY WEIGHT OF VEGETABLE STARCH AND (3) FROM ABOUT 5.0 PERCENT TO ABOUT 65.0 PERCENT BY WEIGHT OF MICROCRYSTALLINE CELLULOSE, SAID NIACINAMIDE-ASCORBIC ACID COMPOSITION BEING A MEMBER SELECTED FROM THE GROUP CONSISTING OF (A) A GRANULATION OF NIACINAMIDE AND ASCORBIC ACID, (B) A GRANULATION OF NIACINAMIDE AND AN ALKALI METAL SALT OF ASCORBIC ACID AND (C) A GRANULATION OF NIACINAMIDE, ASCORBIC ACID AND AN ALKALI METAL SALT OF ASCORBIC ACID, SAID NIACINAMIDEASCORBIC ACID COMPOSITION CONTAINING FROM ABOUT 10 PERCENT TO ABOUT 35 PERCENT BY WEIGHT OF NIACINAMIDE.
References Cited (Backward Citations)
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Cited
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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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |