US2895878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions containing stabilized vitamin a materials
Assignee: Eastman Kodak Co
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Filing: 1955-09-28
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Granted: 1959-07-21
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Expires: 1975-09-28
Abstract
No abstract record available.
Inventors
- 👤 Robert W Lehman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:04
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/59
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A VITAMIN A COMPOSITION HAVING INCORATED THEREIN A STABLIZER COMBINATION COMPRISING TOCOPHEROL IN AMOUNTS FROM 5 MG. TO 15O MG. PER 1,000,000 U.S.P. UNITS OF VITAMIN A IN SAID COMPOSITION AND 2,6-DI-TERTIARY BUTYL-4-METHYL PHENOL IN AMOUNTS FROM 1.0 MG. TO 50 MG. PER 1,000,000 U.S.P. UNITS OF VITAMIN A IN SAID COMPOSITION, THE RELATIVE PROPORTIONS OF TOCOHEROL AND 2,6-TERIARY BUTYL-4-METHYL PHENOL IN SAID STABLIZER COMBINATION BEING 1 TO 5 PARTS OF TOCOPHEROL TO EACH PART OF 2,6-DI-TERTIARY BUTYL-4-7ETHYL PHENOL, SAID TOCOPHEROL BEING PRESENT IN ADDITION TO ANY TOCOPHEROL NATURALLY PRESENT IN OTHER CONSITUENTS OF SAID COMPOSITION.
Claim 2
Dependent Claim
96 words
A VITAMIN A COMPOSITION HAVING INCORATED THEREIN A STABLIZER COMBINATION COMPRISING TOCOPHEROL IN AMOUNTS FROM 5 MG. TO 15O MG. PER 1,000,000 U.S.P. UNITS OF VITAMIN A IN SAID COMPOSITION AND 2,6-DI-TERTIARY BUTYL-4-METHYL PHENOL IN AMOUNTS FROM 1.0 MG. TO 50 MG. PER 1,000,000 U.S.P. UNITS OF VITAMIN A IN SAID COMPOSITION, THE RELATIVE PROPORTIONS OF TOCOHEROL AND 2,6-TERIARY BUTYL-4-METHYL PHENOL IN SAID STABLIZER COMBINATION BEING 1 TO 5 PARTS OF TOCOPHEROL TO EACH PART OF 2,6-DI-TERTIARY BUTYL-4-7ETHYL PHENOL, SAID TOCOPHEROL BEING PRESENT IN ADDITION TO ANY TOCOPHEROL NATURALLY PRESENT IN OTHER CONSITUENTS OF SAID COMPOSITION.
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) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |