US3013018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5-cyanomethylene-2-pyrrolidones
Assignee: EIDP Inc
•
Filing: 1959-04-24
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Granted: 1961-12-12
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Expires: 1979-04-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Clifford L Dickinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:12
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/44; C07D207/30; C07D207/34; C07D207/36; C07D207/38; C07D405/00; C07D405/02; C07D405/12; G; G03; G03C; G03C5/00; G03C5/26; G03C5/29; G03C5/30; G03C5/3028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
COMPOUNDS HAVING THE FORMULA
Claim 2
Dependent Claim
4 words
COMPOUNDS HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |