US3052693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steroid alkyl ethers and process therefor
Assignee: Bayer Pharma AG
•
Filing: 1959-03-13
•
Granted: 1962-09-04
•
Expires: 1979-03-13
Abstract
No abstract record available.
Inventors
- 👤 Engelfried Otto
- 👤 Schenck Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:50
CPC Classifications
C; C07; C07J; C07J1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
THE COMPOUND 17-ETHINYL-19-NOR-TESTOSTERONE-17METHYL ESTER.
Claim 2
Dependent Claim
4 words
THE COMPOUND 17-ETHINYL-19-NOR-TESTOSTERONE-17METHYL ESTER.
References Cited (Backward Citations)
US2280236A
Cited
US2318105A
Cited
US2305727A
Cited
US2374369A
Cited
US2837464A
Cited
DE1010963B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |