Patent US3646201A successfully refreshed from Google Patents.
US3646201A
Expired / Lapsed
US
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Salicylate carbonate compounds
Assignee: Liggett Group LLC
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Filing: 1969-07-31
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Granted: 1972-02-29
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Expires: 1989-07-31
Abstract
Abstract THIS INVENTION RELATES TO NOVEL CARBONATE ANHYDRIDE ESTERS OF ACETYLSALICYLIC ACID HAVING THE GENERAL FORMULA; 1-(CH3-COO-),2-(R-OOC-OOC-)BENZENE WHEREIN R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF BRANCHED AND STRAIGHT-CHAINED, SATURATED AND UNSATURATED, ALIPHATIC AND ALICYCLIC ALCOHOLS HAVING FROM 2 TO 30 CARBON ATOMS AND POLYHYDROXY COMPOUNDS AND MIXTURES THEREOF.
Inventors
- 👤 Andrew G Kallianos
- 👤 James D Mold
- 👤 Melvyn I Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:46
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/76; C07C69/84; C07C69/90
Claims Analysis
Total Claims: 0
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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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |