US3558768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sustained release pharmaceutical compositions
Assignee: STWB Inc
•
Filing: 1969-12-19
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Granted: 1971-01-26
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Expires: 1989-12-19
Abstract
Abstract ORAL SUSTAINED RELEASE PHARMACEUTICAL COMPOSITIONS COMPRISING A TABLET COMPSED OF A CORE COMPRISING A MEDICAMENT DISTRIBUTED IN A MATRIX CONSISTING OF A COMPRESSED BLEND OF A HYDROPHILIC GUM AND CORN PROTEIN AND A SHELL COMPARISING A MEDICAMENT DISTRIBUTED IN A MATRIX CONSISTING OF A COMPRESSED BLEND OF HYDROPHILIC GUMS.
Inventors
- 👤 Kenneth R Klippel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:17
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2072; A61K9/2086; A61K9/209; A61K9/2004; A61K9/2022; A61K9/2063
Claims Analysis
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |