US2762808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2, 3-alkylenedioxy-6-nitro-9-(hydroxy-alkylaminoalkylamino) acridines and their preparation
Assignee: STWB Inc
•
Filing: 1953-10-27
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Granted: 1956-09-11
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Expires: 1973-10-27
Abstract
No abstract record available.
Inventors
- 👤 Steck Edgar Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:40
CPC Classifications
A; A61; A61K; A61K31/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A 2-3-ALKYLENEDIOXY-6-NITRO-9-(NYDROXYALKYLAMINOALKYLAMINO)ACRIDINE HAVING THE STRUCTURE
Claim 2
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A 2-3-ALKYLENEDIOXY-6-NITRO-9-(NYDROXYALKYLAMINOALKYLAMINO)ACRIDINE HAVING THE STRUCTURE
Claim 3
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A 2,3-ALKYLENEDIOXY-6-NOTRO-9-HALOCRIDINE AND A 2,3-ALKYLENEDIOXY-6-NOTRO-9-PHENOXYACRIDINE.
Claim 4
Dependent Claim
13 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A 2,3-ALKYLENEDIOXY-6-NOTRO-9-HALOCRIDINE AND A 2,3-ALKYLENEDIOXY-6-NOTRO-9-PHENOXYACRIDINE.
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) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |