US2940976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-(lower-alkyl)-4-(quaternary-ammonium-alkylimino)-1, 4-dihydroquinolines
Assignee: STWB Inc
•
Filing: 1957-06-19
•
Granted: 1960-06-14
•
Expires: 1977-06-19
Abstract
No abstract record available.
Inventors
- 👤 Alexander R Surrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:25
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/38; C07D215/42; C07D215/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A COMPOSITION OF MATTER SELECTED FROM THE GROUP CONSISTING OF: (A) A 1-(LOWER-ALKYL)-4-(QUATERNARYAMMONIUM-ALKYLIMINO)-1,4-DIHYDROQUINOLINE HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
17 words
A COMPOSITION OF MATTER SELECTED FROM THE GROUP CONSISTING OF: (A) A 1-(LOWER-ALKYL)-4-(QUATERNARYAMMONIUM-ALKYLIMINO)-1,4-DIHYDROQUINOLINE HAVING THE STRUCTURAL FORMULA
References Cited (Backward Citations)
US2454949A
Cited
US2526417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |