US3226388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
9-dicyanomethylenenitrofluorenes and the charge-transfer compounds thereof
Assignee: EIDP Inc
•
Filing: 1962-08-13
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Granted: 1965-12-28
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Expires: 1982-08-13
Abstract
No abstract record available.
Inventors
- 👤 Harris D Hartzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:29
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155; C; C07; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/06; C07C2603/10; C07C2603/12; C07C2603/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
15 words
A NITROFLUORENCE COMPOUND SELECTED FROM THE CLASS CONSISTING OF (I) 9-DICYANOMETHYLENENITROFLUORENE COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
15 words
A NITROFLUORENCE COMPOUND SELECTED FROM THE CLASS CONSISTING OF (I) 9-DICYANOMETHYLENENITROFLUORENE COMPOUNDS OF THE FORMULA
Claim 3
Dependent Claim
5 words
THE 1/1 DIAZOBICYCLOOCTANE/9-DICYANOMETHYLENE-2, 4,7-TRIMITROFLUORENE COMPLEX.
Claim 4
Dependent Claim
5 words
THE 1/1 DIAZOBICYCLOOCTANE/9-DICYANOMETHYLENE-2, 4,7-TRIMITROFLUORENE COMPLEX.
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |