US3822343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pharmaceutical tablet
Assignee: Beecham Group PLC
•
Filing: 1971-04-16
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Granted: 1974-07-02
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Expires: 1991-04-16
Abstract
Abstract A SUSTAINED RELEASE HEAMATINIC TABLET IS PRODUCED WHICH COMPRISES A POROUS MATRIX RESIN WHICH IS A SANDARAC RESIN OR A COPAL RESIN, HAVING INTERCONNECTED DUCTS AND PORES, AND A HAEMATINIC SUBSTANCE PACKED OR CONTAINED IN OR DISPERSED THROUGHOUT THE DUCTS OR PORES.
Inventors
- 👤 B Lister
- 👤 S Hill
- 👤 E Searle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:14
CPC Classifications
A; A61; A61K; A61K33/00; A61K33/24; A61K33/26; A61K31/00; A61K31/28; A61K31/295; A61K9/00; A61K9/20; A61K9/2004; A61K9/2013
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) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |