Patent US3801601A successfully refreshed from Google Patents.
US3801601A
Expired / Lapsed
US
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2-acylamido-2-(3,4-methylenedioxybenzyl)-3-hydroxy-propionitrile compounds
Assignee: Merck and Co Inc
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Filing: 1971-10-27
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Granted: 1974-04-02
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Expires: 1991-10-27
Abstract
Abstract THE INVENTION COMPRISES COMPOUNDS OF THE FORMULA 5-(R3-NH-C(-CN)(-CH2-OH)-CH2-)-1,3-BENZODIOXOLE IN WHICH R3 IS SELECTED FROM THE GROUP CONSISTING OF ACETYL AND FORMYL.
Inventors
- 👤 R Firestone
- 👤 D Reinhold
- 👤 M Sletzinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:26
CPC Classifications
C; C07; C07C; C07C255/00; C07D; C07D317/00; C07D317/08; C07D317/44; C07D317/46; C07D317/48; C07D317/50; C07D317/60
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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |