US3026249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of stable aqueous isomeric vitamin a compositions
Assignee: Eastman Kodak Co
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Filing: 1960-06-30
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Granted: 1962-03-20
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Expires: 1980-06-30
Abstract
No abstract record available.
Inventors
- 👤 Stanley R Ames
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:39
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/59
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE PROCESS FOR PREPARING A STABILIZED VITAMIN A COMPOSITION WHICH COMPRISES PROVIDING AN ISOMERIC MIXTURE OF AN ESTER OF SYNTHETIC VITAMIN A ALCOHOL SELECTED FROM THE GROUP CONSISTING OF VITAMIN A ACETATE AND VITAMIN PALMITATE CONSISTING ESSENTIALLY OF 50% TO 60% OF TSHE ALL-TRAANS ISOMER, 15% TO 25% OF THE 2-CIS ISOMER, 15% TO 20% OF THE 6-CIS ISOMER AND 5% TO 10% OF THE 2,6-DI CIS ISOMER, AND INCORPORATING SAID ISOMERIC MIXTURE INTO AN AQUEOUS MEDIUM.
Claim 2
Dependent Claim
77 words
THE PROCESS FOR PREPARING A STABILIZED VITAMIN A COMPOSITION WHICH COMPRISES PROVIDING AN ISOMERIC MIXTURE OF AN ESTER OF SYNTHETIC VITAMIN A ALCOHOL SELECTED FROM THE GROUP CONSISTING OF VITAMIN A ACETATE AND VITAMIN PALMITATE CONSISTING ESSENTIALLY OF 50% TO 60% OF TSHE ALL-TRAANS ISOMER, 15% TO 25% OF THE 2-CIS ISOMER, 15% TO 20% OF THE 6-CIS ISOMER AND 5% TO 10% OF THE 2,6-DI CIS ISOMER, AND INCORPORATING SAID ISOMERIC MIXTURE INTO AN AQUEOUS MEDIUM.
References Cited (Backward Citations)
US2907696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |