US2949485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary ammonium salts of 2, 2-diphenyl ethyl-amino ethyl ethers
Assignee: Ortho Pharmaceutical Corp
•
Filing: 1957-01-29
•
Granted: 1960-08-16
•
Expires: 1977-01-29
Abstract
No abstract record available.
Inventors
- 👤 Oroshnik William
- 👤 Alexander D Mebane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:36
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; A; A61; A61K; A61K31/00; A61K31/13; A61K31/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
QUATERNARY AMMONIUM SALTS HAVING THE FORMULA
Claim 2
Dependent Claim
6 words
QUATERNARY AMMONIUM SALTS HAVING THE FORMULA
References Cited (Backward Citations)
US2508422A
Cited
US2453729A
Cited
US2454092A
Cited
US2532292A
Cited
US2703324A
Cited
US2751588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |