Patent US3144477A successfully refreshed from Google Patents.
US3144477A
Expired / Lapsed
US
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2-butenehexacarbonitriles and process for the preparation thereof
Assignee: EIDP Inc
•
Filing: 1962-03-20
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Granted: 1964-08-11
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Expires: 1982-03-20
Abstract
No abstract record available.
Inventors
- 👤 Elmore L Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:39
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
1,4-DISUBSTITUTED 2-BUTENEHEXACARBONITRILES OF THE FORMULA
Claim 2
Dependent Claim
5 words
1,4-DISUBSTITUTED 2-BUTENEHEXACARBONITRILES OF THE FORMULA
References Cited (Backward Citations)
US2766243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |