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Patent US2883396A successfully refreshed from Google Patents.
US2883396A
Expired / Lapsed
US
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Hemiacetal ester epoxides
Assignee: Union Carbide Corp
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Filing: 1957-03-14
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Granted: 1959-04-21
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Expires: 1977-03-14
Abstract
No abstract record available.
Inventors
- 👤 Phillips Benjamin
- 👤 Donald L Heywood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:19
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
8 words
AN ALDEHYDE EPOXYALKYL HEMIACETAL ESTER 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) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |