Patent US4789766A successfully refreshed from Google Patents.
US3136785A
Expired / Lapsed
US
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New acetals containing epoxide groups
Assignee: BASF Schweiz AG
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Filing: 1962-04-02
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Granted: 1964-06-09
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 Porret Daniel
- 👤 Fisch Willy
- 👤 Batzer Hans
- 👤 Ernst Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:11
CPC Classifications
C; C07; C07D; C07D319/00; C07D319/04; C07D319/08; C07H; C07H17/00; C07H17/04; C08; C08F; C08F8/00; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/24; C08G59/26; C08G59/32; C08G59/3236
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
6 words
A POLYEPOXIDE COMPOUND OF 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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |