US3594373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bases of 2-anilinobenzoxazoles and process for making them
Assignee: TWYFORD LAB Ltd
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Filing: 1968-03-11
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Granted: 1971-07-20
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Expires: 1988-03-11
Abstract
Abstract NITROGEN BASES OF ALKOXY-SUBSTITUTED ANILINOBENZOXAZOLES AND THE SALTS OF THESE BASES WITH PHYSIOLOGICALLY ACCEPTABLE ACIDS, HAVING UTILITY AS ANTI-DEPRESSIVE AGENTS, ARE DISCLOSED. THESE BASES MAY BE PREAPRED BY CONDENSING A 2-HALOGENO- OR 2-MERCAPTOBENZOXAZOLE WITH AN ANILINE COMPOUND HAVING AN APPROPRIATELY SUBSTITUTED ALKOXY GROUP IN THE PARA-POSITION. THE NITROGEN BASE GROUP MAY BE PRESENT AS THE SUBSTITUENT ON THE ALKOXY GROUP BEFORE THE CONDENSATION REACTION OR MAY BE ADDED AS A SEPARATE STEP.
Inventors
- 👤 Francis Frederick Stephens
- 👤 Christopher James Sharpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:50
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/52; C07D263/54; C07D263/58
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |