Patent US3905869A successfully refreshed from Google Patents.
US2992235A
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Materials having vitamin e activity
Assignee: Vitamins Ltd
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Filing: 1957-10-04
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Granted: 1961-07-11
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Expires: 1977-10-04
Abstract
No abstract record available.
Inventors
- 👤 Green Joseph
- 👤 Marcinkiewicz Stefan Zbigniew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:39
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/58; C07D311/70; C07D311/72; A; A61; A61K; A61K31/00; A61K31/33; A61K31/335; A61K31/35; A61K31/352; A61K31/353; A61K31/355
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN A PROCESS FOR TREATING A TOCOPHEROL OTHER THAN A-TOCOPHEROL TO ENHANCE THE VITAMIN E ACTIVITY OF THE TREATED TOCOPHEROL WHEREIN AT LEAST ONE OF THE AROMATIC HYDROGEN ATOMS IN THE 5,7 AND 8 POSITIONS OF THE TREATED TOCOPHEROL IS REPLACED BY A MEMBER SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL AND ARALKYL GROUPS THROUGH REACTION WITH AN ALDEHYDE OF THE FORMULA RHCO IN WHICH R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, LOWER ALKYL, ARYL AND ARALKYL TO GIVE AT LEAST ONE TOCOPHEROL CONTAINING A GROUP WHICH IS SUBSEQUENTLY CONVERTED TO AN UNSUBSTITUTED RADICAL SELECTED FROM THE GROUP CONSISTING OF SAID LOWER ALKYL, AND ARALKYL GROUPS, THE IMPROVEMENT WHICH CONSISTS ESSENTIALLY OF CARRYING OUT THE REACTION WITH THE ALDEHYDE IN THE PRESENCE OF A HALOGENATING AGENT SELECTED FROM THE GROUP CONSISTING OF PCL5, PBR5, POCL3, AND POBR3.
Claim 2
Dependent Claim
140 words
IN A PROCESS FOR TREATING A TOCOPHEROL OTHER THAN A-TOCOPHEROL TO ENHANCE THE VITAMIN E ACTIVITY OF THE TREATED TOCOPHEROL WHEREIN AT LEAST ONE OF THE AROMATIC HYDROGEN ATOMS IN THE 5,7 AND 8 POSITIONS OF THE TREATED TOCOPHEROL IS REPLACED BY A MEMBER SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL AND ARALKYL GROUPS THROUGH REACTION WITH AN ALDEHYDE OF THE FORMULA RHCO IN WHICH R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, LOWER ALKYL, ARYL AND ARALKYL TO GIVE AT LEAST ONE TOCOPHEROL CONTAINING A GROUP WHICH IS SUBSEQUENTLY CONVERTED TO AN UNSUBSTITUTED RADICAL SELECTED FROM THE GROUP CONSISTING OF SAID LOWER ALKYL, AND ARALKYL GROUPS, THE IMPROVEMENT WHICH CONSISTS ESSENTIALLY OF CARRYING OUT THE REACTION WITH THE ALDEHYDE IN THE PRESENCE OF A HALOGENATING AGENT SELECTED FROM THE GROUP CONSISTING OF PCL5, PBR5, POCL3, AND POBR3.
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) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |