US3810941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plicatamides
Assignee: TDK Micronas GmbH
•
Filing: 1972-12-18
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Granted: 1974-05-14
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Expires: 1992-12-18
Abstract
Abstract A PLICATAMIDE OF THE STRUCTURAL FORMULA 1-(3,4-DI(HO-),5-(CH3-O-)PHENYL),2-(R-NH-CO-),3-(HO-CH2-), 6-(CH3-O-)-1,2,3,4-TETRAHYDRONAPHTHALENE-2,3,7-TRIOL WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ETHYL AND N-PROPYL. THE COMPOUNDS ARE PREPARED BY REACTING METHYL PLICATATE WITH A PRIMARY AMINE IN AQUEOUS SOLUTION ACIDIFYING AND RECOVERING THE PLICATAMIDE. THE COMPOUNDS EXHIBIT EXCELLENT ANTIOXIDANT ACTIVITY FOR THE EDIBLE FATS AND OILS AND GOOD LIPID SOLUBILITY.
Inventors
- 👤 R Buchholz
- 👤 M Reintjes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:17
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0042; C11B5/0057; A; A23; A23B; A23B2/00; A23B2/70; A23B2/725; A23B2/729; A23B2/762
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |