US2643209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vitamin a acetate gelatin beadlets
Assignee: Pfizer Inc
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Filing: 1951-05-16
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Granted: 1953-06-23
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Expires: 1971-05-16
Abstract
No abstract record available.
Inventors
- 👤 Edward J Goett
- 👤 Jr Edward Everett Macdonough
- 👤 Charles J Salivar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:19
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/59
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
SUBSTANTIALLY DRY OIL-FREE BEADLETS CONSISTING ESSENTIALLY OF GELATIN, HAVING DISPERSED THROUGHOUT THEIR INTERIORS A HIGH PROPORTION OF CRYSTALS OF VITAMIN A ACETATE.
Claim 2
Dependent Claim
22 words
SUBSTANTIALLY DRY OIL-FREE BEADLETS CONSISTING ESSENTIALLY OF GELATIN, HAVING DISPERSED THROUGHOUT THEIR INTERIORS A HIGH PROPORTION OF CRYSTALS OF VITAMIN A ACETATE.
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) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |