US3027378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing nu4, nu4'-alkylene-n1, n1'-alkylene-bis-4-aminoquinaldinium-dihalides and resultant products
Assignee: Individual
•
Filing: 1960-06-22
•
Granted: 1962-03-27
•
Expires: 1980-06-22
Abstract
No abstract record available.
Inventors
- 👤 Stark Hans Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:05
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/12; C07D471/18; C07D215/00; C07D215/02; C07D215/04; C07D215/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
N4,N4''-ALKYLENE-N1,N1'' - ALKYLENE - BIS - 4 - AMINOQUINALDINIUM-DIHALIDES OF THE FORMULA
Claim 2
Dependent Claim
12 words
N4,N4''-ALKYLENE-N1,N1'' - ALKYLENE - BIS - 4 - AMINOQUINALDINIUM-DIHALIDES OF THE FORMULA
References Cited (Backward Citations)
US2791582A
Cited
US2901484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |