Patent US3730835A successfully refreshed from Google Patents.
US3730835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel device coated with a prosta-glandin and preparation thereof
Assignee: Alza Corp
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Filing: 1971-04-15
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Granted: 1973-05-01
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Expires: 1991-04-15
Abstract
Abstract A DEVICE FOR ADDING A PLATELET ANTI-AGGREGATION PROSTAGLANDIN TO A FLUID CONTAINING PLAETLETS, OR TO PLATELETS, THE DEVICE COMPRISING A SUBSTRATE OF INCREASED SURFACE AREA COATED WITH A PLATELET ANTI-AGGREGATION PROSTAGLANDIN THAT RELEASES THE PROSTAGLANDIN ON CONTACT BY THE FLUID OR PLATELET. THE DEVICE IS PREPARED BY SHAPING THE DEPOSITING A PROSTAGLANDIN ON THE SUBSTRATE BY EVAPORATION, SOLUTION DEPOSITION, COATING IN A FLUIDIZED BED AND THE LIKE.
Inventors
- 👤 H Leeper
- 👤 P Ramwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:49
CPC Classifications
A; A61; A61L; A61L29/00; A61L29/08; A61K; A61K31/00; A61K31/557; A61J; A61J1/00; A61J1/05; A61J1/10
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |