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US3947596A
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Free-flowing, high density, agglomerated vitamin A powder compositions
Assignee: Hoffmann La Roche Inc
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Filing: 1974-06-26
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Granted: 1976-03-30
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Expires: 1994-06-26
Abstract
Abstract A novel spray-drying technique process, and the resulting composition, for preparing a high density, agglomerated vitamin-containing composition having improved tableting characteristics.
Inventors
- 👤 Marco Alfred Cannalonga
- 👤 Louis Vincent Czarecki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:37
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/16; B01D1/18; A; A61; A61K; A61K9/00; A61K9/14; A61K9/141; A61K9/143; A61K9/148; A61K9/48; A61K9/50; A61K9/5005; A61K9/5021; A61K9/5052; A61K9/5057
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A spray-dried, free-flowing, Vitamin A powder composition suitable for use in direct compression tableting techniques which comprises, in percents by weight based on the total weight of the powder composition, from about 15% to about 30% of vitamin A palmitate, from about 50% to about 65% of a hydrolyzed gelatin of low Bloom, from about 10% to about 20% sucrose, from about 2% to about 6% of 1,2-dihydroxy-6-ethoxy-2,2,4-trimethylquinoline and from about 1% to about 5% of silicic acid; said composition in the form of agglomerated particles having a bulk density range of from about 35 pounds to about 45 pounds per cubic foot.
Claim 2
Dependent Claim
103 words
A spray-dried, free-flowing, Vitamin A powder composition suitable for use in direct compression tableting techniques which comprises, in percents by weight based on the total weight of the powder composition, from about 15% to about 30% of vitamin A palmitate, from about 50% to about 65% of a hydrolyzed gelatin of low Bloom, from about 10% to about 20% sucrose, from about 2% to about 6% of 1,2-dihydroxy-6-ethoxy-2,2,4-trimethylquinoline and from about 1% to about 5% of silicic acid; said composition in the form of agglomerated particles having a bulk density range of from about 35 pounds to about 45 pounds per cubic foot.
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) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |