Patent US2773892A successfully refreshed from Google Patents.
US2773892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-amino-1-halo-2, 2-dicyanoethylenes and preparation of same
Assignee: EIDP Inc
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Filing: 1955-05-31
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Granted: 1956-12-11
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Expires: 1975-05-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Ernest L Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:27
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A COMPOUND OF THE CLAS CONSISTING OF 1-AMINO-1HALO-2,2-DICYANOETHYLENES.
Claim 2
Dependent Claim
8 words
A COMPOUND OF THE CLAS CONSISTING OF 1-AMINO-1HALO-2,2-DICYANOETHYLENES.
References Cited (Backward Citations)
US2375185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |