Patent US3737521A successfully refreshed from Google Patents.
US3737521A
Expired / Lapsed
US
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Formulation for sustained release of a biological agent
Assignee: Goodrich Corp
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Filing: 1970-12-09
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Granted: 1973-06-05
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Expires: 1990-12-09
Abstract
Abstract A UNIQUE FORMULATION FOR THE SUSTAINED RELEASE OF ACTIVE AGENT FOR MEDICATION IN ANIMALS WHEREIN THE ACTIVE AGENT IS RELEASED FROM A SOLID SOLUTION OR DISPERSION OF THERMOPLASTIC POLYMER BY DIFFUSION OR LEACHING.
Inventors
- 👤 J Born
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:56
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/2031
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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |