Patent US2998419A successfully refreshed from Google Patents.
US2998419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain amino, dicyano pyrazoles and process
Assignee: EIDP Inc
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Filing: 1959-10-30
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Granted: 1961-08-29
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Expires: 1979-10-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Clifford Lee Dickinson
- 👤 Middleton William Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:51
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A COMPOUND SELECTED FROM THE CLASS CONSISTING OF THOSE OF THE FORMULA
Claim 2
Dependent Claim
12 words
A COMPOUND SELECTED FROM THE CLASS CONSISTING OF THOSE OF THE FORMULA
References Cited (Backward Citations)
GB798662A
Cited
US2912437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |