Patent US2794028A successfully refreshed from Google Patents.
US2794028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy derivatives
Assignee: Union Carbide Corp
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Filing: 1953-08-13
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Granted: 1957-05-28
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Expires: 1973-08-13
Abstract
No abstract record available.
Inventors
- 👤 Phillips Benjamin
- 👤 Paul S Starcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:36
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
AN EPOXIDE SELECTED FROM THE GROUP CONSISTING OF 4,5 - EPOXYCYCLOHEXANE - 1,2 - DICARBOXYLIC AND 4,5EPOXYCYCLOHEXANE-1,2-DICARBOXYLIC ANHYDRIDE.
Claim 2
Dependent Claim
18 words
AN EPOXIDE SELECTED FROM THE GROUP CONSISTING OF 4,5 - EPOXYCYCLOHEXANE - 1,2 - DICARBOXYLIC AND 4,5EPOXYCYCLOHEXANE-1,2-DICARBOXYLIC ANHYDRIDE.
References Cited (Backward Citations)
US2570029A
Cited
US2550494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |