US3631070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetrahydrofuryl ethers of steroids and preparation thereof
Assignee: Ortho Pharmaceutical Corp
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Filing: 1967-03-09
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Granted: 1971-12-28
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Expires: 1987-03-09
Abstract
Abstract THE PRESENT INVENTION RELATES TO NOVEL STEROIDAL TETRAHYDROFURYL ETHERS AND THE PROCESS FOR THEIR PREPARATION. MORE PARTICULARLY, THE PRESENT INVENTION RELATES TO 3-(TETRAHYDRO-2''-FURYL) ETHERS HAVING ANTILITTERING ACTIVITY AND 17(TETRA-HYDRO-2''-FURYL) ETHERS OF STEROIDS AND THE PROCESS FOR THEIR PREPARATION.
Inventors
- 👤 Alexander Mebane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:48
CPC Classifications
C; C07; C07J; C07J17/00; C07J75/00
Claims Analysis
Total Claims: 0
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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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |