US3218324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-methyl ergotamines and ergocornines
Assignee: Sandoz AG
•
Filing: 1963-11-13
•
Granted: 1965-11-16
•
Expires: 1983-11-13
Abstract
No abstract record available.
Inventors
- 👤 Hofmann Albert
- 👤 Troxler Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:54
CPC Classifications
C; C07; C07D; C07D457/00; C07D457/04; C07D457/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
1-METHYL-ERGOTAMINE. 2. 1-METHYL-DIHYDRO-ERGOTAMINE. 3. 1-METHYL-DIHYDRO-ERGOCORNINE.
Claim 2
Dependent Claim
5 words
1-METHYL-ERGOTAMINE. 2. 1-METHYL-DIHYDRO-ERGOTAMINE. 3. 1-METHYL-DIHYDRO-ERGOCORNINE.
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |