US3682969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxidized hydroaromatic acetals
Assignee: Novartis AG
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Filing: 1970-05-21
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Granted: 1972-08-08
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Expires: 1990-05-21
Abstract
Abstract Epoxidized derivatives of reaction products of aldehydes of the general formula I: with dialcohols having at least one epoxidizable C=C double bond. The products are useful for preparing epoxy resins. D R A W I N G
Inventors
- 👤 Hans Batzer
- 👤 Erwin Nikles
- 👤 Otto Ernst
- 👤 Daniel Porret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:57
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
7 words
-. The diepoxy compound having the formula
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |