Patent US3766211A successfully refreshed from Google Patents.
US3766211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxidized hydroaromatic acetals
Assignee: Novartis AG
•
Filing: 1972-03-09
•
Granted: 1973-10-16
•
Expires: 1992-03-09
Abstract
Abstract EXPOIXIDIZED DERIVATIVES OF REACTION PRODUCTS OF ALDEHYDES OF THE GENERAL FORMULA I: 1-R3,2-R4,3-R5,3-R6,4-R7,4-R8,5-(O=CH-),5-R9,6-R1,6-R2- CYCLOHEX-1-ENE WITH DIALCOHOLS HAVING AT LEAST ONE EPOXIDIZABLE C=C DOUBLE BOND. THE PRODUCTS ARE USEFUL FOR PREPARING EPOXY RESINS.
Inventors
- 👤 H Batzer
- 👤 E Nikles
- 👤 O Ernst
- 👤 D Porret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:15
CPC Classifications
C; C07; C07D; C07D319/00; C07D319/04; C07D319/06; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/26
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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |