US2647895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
S-aralkylamino-z-dialkylaminoben
Assignee: —
•
Filing: —
•
Granted: 1953-08-04
•
Expires: 1970-08-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:44
CPC Classifications
C; C07; C07D; C07D498/00; C07D498/02; C07D498/04; C07D265/00; C07D265/28; C07D265/34; C07D265/38; C09; C09B; C09B19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
5 - ARALKYLAMINO - 9 - DIALKYLAMINO BENZO(A)PHENOXAZINE COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF FREE BASES HAVING THE FOLLOWING FORMULA
Claim 2
Dependent Claim
21 words
5 - ARALKYLAMINO - 9 - DIALKYLAMINO BENZO(A)PHENOXAZINE COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF FREE BASES HAVING THE FOLLOWING FORMULA
References Cited (Backward Citations)
US2528863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |