US2723280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-methyl-17-ethinyl-estradiol
Assignee: Leo Pharma AS
•
Filing: 1954-08-18
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Granted: 1955-11-08
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Expires: 1974-08-18
Abstract
No abstract record available.
Inventors
- 👤 Inhoffen Hans Herloff
- 👤 Bremer Ole Ludvig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:29
CPC Classifications
C; C07; C07J; C07J1/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
AS A NEW CHEMICAL COMPOUND, 1-METHYL-17-ETHINYLESTRADIOL.
Claim 2
Dependent Claim
6 words
AS A NEW CHEMICAL COMPOUND, 1-METHYL-17-ETHINYLESTRADIOL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |