US2569409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amide-linked bis-quaternary ammonium compounds
Assignee: Rohm and Haas Co
•
Filing: 1950-09-27
•
Granted: 1951-09-25
•
Expires: 1970-09-27
Abstract
No abstract record available.
Inventors
- 👤 Benneville Peter L De
- 👤 Charles L Levesque
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:26
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/12; A; A01; A01N; A01N37/00; A01N37/44; C07C237/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
COMPOUNDS OF THE STRUCTURE
Claim 2
Dependent Claim
4 words
COMPOUNDS OF THE STRUCTURE
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |