US3089823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous vitamin a oil emulsion
Assignee: Eastman Kodak Co
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Filing: 1961-09-05
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Granted: 1963-05-14
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Expires: 1981-09-05
Abstract
No abstract record available.
Inventors
- 👤 Ronald F Czarnecki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:05
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/59
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A STABLE, AQUEOUS VITAMIN A OIL EMULSION WHICH CONSISTS ESSENTIALLY OF AN OILY VITAMIN A-ACTIVE CONCENTRATE AT A CONCENTRATION OF ABOUT 1-10 WEIGHT PERCENT; WATER AT A CONCENTRATION OF ABOUT 30-95 WEIGHT PERCENT; METHYL CELLULOSE AT A CONCENTRATION OF ABOUT 1.5-3.5 WEIGHT PERCENT; AND GELATIN AT A CONCENTRATION EFFECTIVE TO SUBSTANTIALLY SUPPRESS DEVELOPMENT OF COLORING UNDER NORMAL STORAGE CONDITIONS BUT EFFECTIVE TO CAUSE GELATION OF THE WATER PHASE OF SAID EMULSION.
Claim 2
Dependent Claim
71 words
A STABLE, AQUEOUS VITAMIN A OIL EMULSION WHICH CONSISTS ESSENTIALLY OF AN OILY VITAMIN A-ACTIVE CONCENTRATE AT A CONCENTRATION OF ABOUT 1-10 WEIGHT PERCENT; WATER AT A CONCENTRATION OF ABOUT 30-95 WEIGHT PERCENT; METHYL CELLULOSE AT A CONCENTRATION OF ABOUT 1.5-3.5 WEIGHT PERCENT; AND GELATIN AT A CONCENTRATION EFFECTIVE TO SUBSTANTIALLY SUPPRESS DEVELOPMENT OF COLORING UNDER NORMAL STORAGE CONDITIONS BUT EFFECTIVE TO CAUSE GELATION OF THE WATER PHASE OF SAID EMULSION.
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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |