US3101339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary salts of normorphine and its acylated derivatives
Assignee: C.H. Boehringer Sohn AG and Co KG
•
Filing: 1959-10-26
•
Granted: 1963-08-20
•
Expires: 1979-10-26
Abstract
No abstract record available.
Inventors
- 👤 Zeile Karl
- 👤 Freter Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:28
CPC Classifications
C; C07; C07D; C07D489/00; C07D489/02; C07D489/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
N-SUBSTITUTED NORMORPHINIUM COMPOUNDS HAVING THE STRUCTURE FORMULA
Claim 2
Dependent Claim
7 words
N-SUBSTITUTED NORMORPHINIUM COMPOUNDS HAVING THE STRUCTURE FORMULA
References Cited (Backward Citations)
US2619485A
Cited
US2741609A
Cited
US2364833A
Cited
GB755521A
Cited
US2928768A
Cited
US2967130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |