US3883659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
9-Oxaprostaglandin compositions
Assignee: Novartis Corp
•
Filing: 1973-05-18
•
Granted: 1975-05-13
•
Expires: 1993-05-18
Abstract
Abstract 7-(3 Alpha -(3-hydroxy-3-hydrocarbylpropyl or -1-propenyl)-4hydroxy-tetrahydro-2 Beta -furyl)-heptanoic or 5-heptenoic acids, esters or salts thereof are stable, prostaglandin-like acting agents.
Inventors
- 👤 Isidoros Vlattas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:55
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/26; C07D307/30; C07D307/32; C07C; C07C255/00; C07D307/04; C07D307/18; C07D307/20; C07D307/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
10 words
A PHARMACEUTICAL COMPOSITION COMPRISING A COMPPOUND, CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
10 words
A PHARMACEUTICAL COMPOSITION COMPRISING A COMPPOUND, CORRESPONDING TO THE FORMULA
Claim 3
Dependent Claim
15 words
A composition as claimed in claim 1, wherein the effective compound corresponds to the Formula
Claim 4
Dependent Claim
23 words
A composition as claimed in claim 1, wherein the effective compound is the 7-(3 Alpha -(3 Beta -hydroxy-1-trans-octenyl)-4 Beta -hydroxy-tetrahydro-2 Beta -furyl)-heptanoic acid.
References Cited (Backward Citations)
US3678092A
Cited
US3729502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |