Patent US3883565A successfully refreshed from Google Patents.
US3883565A
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Ester of {60 -tocopherol
Assignee: Imperial Chemical Industries Ltd
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Filing: 1973-10-24
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Granted: 1975-05-13
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Expires: 1993-10-24
Abstract
Abstract Esters of Alpha -tocopherol with acids related to phenoxyisobutyric acid, especially p-chlorophenoxy-2-methylpropionic acid. These ester possess hypolipidaemic properties as well as vitamin E activity.
Inventors
- 👤 Thomas Patrick Cunn Mulholland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:20
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/58; C07D311/70; C07D311/72
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
10 words
AN ESTER OF A-TOCOPHEROL WITH AN ACID OF THE FORMULA:
Claim 2
Dependent Claim
10 words
AN ESTER OF A-TOCOPHEROL WITH AN ACID OF THE FORMULA:
Claim 3
Dependent Claim
17 words
An ester as claimed in claim 1 which is DL- Alpha -tocopheryl 2-(4-chlorophenoxy)-2-methylpropionate or D- Alpha -tocopheryl-2(4-chlorophenoxy)-2-methylpropionate.
References Cited (Backward Citations)
US3151127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |