US2856414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of alpha-tocopherol
Assignee: —
•
Filing: —
•
Granted: 1958-10-14
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Expires: 1975-10-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:57
CPC Classifications
C; C07; C07C; C07C46/00; C07C46/02; C07C46/06; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/58; C07D311/70; C07D311/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A METHOD OF PRODUCING ALPHA-TOCOPHERYLQUINONE IN WHICH ALPHA-TOCOPHEROL IS REACTED WITH FERRIC CHLORIDE IN AN INERT REACTION MEDIUM; THE IMPROVEMENT IN WHICH THE ALPHA-TOCOPHEROL IS SEPARATELY DISSOLVED IN A RELATIVELY NON-POLAR SOLVENT, THE FERRIC CHLORIDE IS SEPARATELY DISSOLVED IN A RELATIVELY POLAR SOLVENT WHICH FORMS A TWOPHASE SOLVENT REACTION MEDIUM WHEN MIXED WITH SAID NON-POLAR SOLVENT, AND THE SEPARATE SOLUTIONS ARE THEREAFTER MIXED TO PERMIT THE FERRIC CHLORIDE TO REACT WITH THE ALPHA-TOCOPHEROL, WHEREBY THE ODIDATION OF THE ALPHA TOCOPHEROL TO ALPHA-TOCOPHERYLQUINONE TAKES PLACE IN THE RESULTING TWO-PHASE SOLVENT REACTION MEDIUM.
Claim 2
Dependent Claim
92 words
IN A METHOD OF PRODUCING ALPHA-TOCOPHERYLQUINONE IN WHICH ALPHA-TOCOPHEROL IS REACTED WITH FERRIC CHLORIDE IN AN INERT REACTION MEDIUM; THE IMPROVEMENT IN WHICH THE ALPHA-TOCOPHEROL IS SEPARATELY DISSOLVED IN A RELATIVELY NON-POLAR SOLVENT, THE FERRIC CHLORIDE IS SEPARATELY DISSOLVED IN A RELATIVELY POLAR SOLVENT WHICH FORMS A TWOPHASE SOLVENT REACTION MEDIUM WHEN MIXED WITH SAID NON-POLAR SOLVENT, AND THE SEPARATE SOLUTIONS ARE THEREAFTER MIXED TO PERMIT THE FERRIC CHLORIDE TO REACT WITH THE ALPHA-TOCOPHEROL, WHEREBY THE ODIDATION OF THE ALPHA TOCOPHEROL TO ALPHA-TOCOPHERYLQUINONE TAKES PLACE IN THE RESULTING TWO-PHASE SOLVENT REACTION MEDIUM.
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) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |