US3629392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Entrapment compositions and processes
Assignee: GILBERT S BANKER
•
Filing: 1969-08-15
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Granted: 1971-12-21
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Expires: 1989-08-15
Abstract
Abstract PHARMACEUTICAL COMPOSITIONS ARE PREPARED BY COMBINING IN THE PRESENCE OF WATER A POLYMER HAVING ACIDIC OR BASIC FUNCTIONALITY WITH A PHARMACEUTICALLY ACTIVE MATERIAL HAVING RESPECTIVELY BASIC OF ACIDIC FUNCTIONALITY, COAGULATING OR OTHERWISE SEPARATING THE PRODUCT PRODUCED AND THEN FORMULATING THE PRODUCT BY CONVENTIONAL TECHNIQUES INTO SUITABLE DOSAGE FORMS. THE RESULTING PRODUCTS ARE CHARACTERIZED BY POSSESING UNIQUE SUSTAINED RELEASE, ENTERIC OR DELAYED RELEASE PROPERTIES.
Inventors
- 👤 Gilbert S Banker
- 👤 Harris Goodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:41
CPC Classifications
A; A61; A61K; A61K47/00; A61K47/30; A61K47/32; A61K47/50; A61K47/51; A61K47/56; A61K47/58
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |