US3812147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acylxylidide local anaesthetics
Assignee: Astra USA Inc
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Filing: 1971-07-19
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Granted: 1974-05-21
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Expires: 1991-07-19
Abstract
Abstract THE 2-ALKYL-2-ALKYLAMINO - 2'',6'' - ACETOXYLIDIDE COMPOUNDS ARE USEFUL AS LONG LASTING LOCAL ANAESTHETICS.
Inventors
- 👤 H Adams
- 👤 G Kronberg
- 👤 B Takman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:48
CPC Classifications
C; C07; C07C; C07C53/00; C07C53/38; C07C53/46; C07C53/50; C07C237/00
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) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |