US3079403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing amines
Assignee: Smith Kline & French Laboratories Ltd
•
Filing: 1960-09-19
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Granted: 1963-02-26
•
Expires: 1980-09-19
Abstract
No abstract record available.
Inventors
- 👤 Weinstock Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:28
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/78; C07D307/79; C07D307/81; C07D317/00; C07D317/08; C07D317/44; C07D317/46; C07D317/48; C07D317/50; C07D317/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
THE METHOD OF PREPARING CYLOPROPYL ACID AZIDES WHICH COMPRISES REACTING A CYCLOPROPANE CARBOXYLIC ACID LOWER ALKYL MIXED ANHYDRIDE WITH SODIUM AZIDE.
Claim 2
Independent Claim
21 words
THE METHOD OF PREPARING CYLOPROPYL ACID AZIDES WHICH COMPRISES REACTING A CYCLOPROPANE CARBOXYLIC ACID LOWER ALKYL MIXED ANHYDRIDE WITH SODIUM AZIDE.
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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |