Patent US3714196A successfully refreshed from Google Patents.
US3714196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminoacetals and aminoketals,processes for their manufacture and their use
Assignee: Novartis AG
•
Filing: 1971-04-20
•
Granted: 1973-01-30
•
Expires: 1991-04-20
Abstract
Abstract NEW ACETALS OR KETALS SUBSTITUTED IN THE A-POSITION BY AT LEAST TWO AMINOPROPYL GROUPS, FOR EXAMPLE 2,2-BIS-(YAMINOPROPYL)PROPIONALDEHYDE - GLYCOL - ACETAL OR 1,1,1TRIS''Y-AMINOPROPYL) ACETONE-ETYLENE GLYCOL-ACETAL, ARE MANUFACTURE BY CATALYTICALLY HYDROGENATING ACETALS OR KETALS SUBSTITUTED BY AT LEAST TWO B-CYANOETHYL GROUPS IN THE A-POSITION. THE NEW COMPOUNDS ARE VALUABLE CURING AGENTS FOR EPOXIDE RESINS.
Inventors
- 👤 H Zondler
- 👤 W Pfleiderer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:30
CPC Classifications
C; C07; C07C; C07C255/00; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24; C07D317/00; C07D317/08; C07D317/10; C07D317/14; C07D317/28; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/504
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |