US3826823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized prostaglandin preparations
Assignee: Syntex USA LLC
•
Filing: 1972-09-25
•
Granted: 1974-07-30
•
Expires: 1992-09-25
Abstract
Abstract A DRY, STABILIZED PHARMACEUTICAL PREPATATION COMPRISING A MINOR AMOUNT OF A PROSTAGIANDIN PARTICULARLY PGF2; AND A MAJOR AMOUNT OF POLYINYL PYRROLIDONE WHICH SERVES TO STABILIZE, FOR EXTENDED PERIODS OF TIME, THE CHEMICAL POTENCY OF THE PROSTAGLANDIN MATERIAL.
Inventors
- 👤 Rourke A O
- 👤 J Kent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:19
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/557
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |