Patent US2596242A successfully refreshed from Google Patents.
US3147187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sustained release pharmaceutical
Assignee: DON HALL LAB
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Filing: 1962-09-10
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Granted: 1964-09-01
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Expires: 1982-09-10
Abstract
No abstract record available.
Inventors
- 👤 Malcolm L Playfair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:24
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/205; A61K9/2054; A61K9/2013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A SUSTAINED RELEASE PHARMACEUTICAL COMPOSITION CONSISTING ESSENTIALLY OF A HOMOGENEOUS MIXTURE OF DRUG, DIGESTIBLE FATTY MATERIAL SELECTED FROM THE CLASS CONSISTING OF FATS AND FAT-SOLUBLE SUBSTANCES THAT ARE DIGESTIBLE BY THE HUMAN BODY, AND SWELLING AGENT SELECTED FROM THE CLASS CONSISTING OF THOSE CELLULOSE ETHERS AND PROTEINACEOUS SUBSTANCES THAT ARE CHARACTERIZED BY SWELLING IN THE PRESENCE OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF BODY FLUIDS AND ENZYMES.
Claim 2
Dependent Claim
69 words
A SUSTAINED RELEASE PHARMACEUTICAL COMPOSITION CONSISTING ESSENTIALLY OF A HOMOGENEOUS MIXTURE OF DRUG, DIGESTIBLE FATTY MATERIAL SELECTED FROM THE CLASS CONSISTING OF FATS AND FAT-SOLUBLE SUBSTANCES THAT ARE DIGESTIBLE BY THE HUMAN BODY, AND SWELLING AGENT SELECTED FROM THE CLASS CONSISTING OF THOSE CELLULOSE ETHERS AND PROTEINACEOUS SUBSTANCES THAT ARE CHARACTERIZED BY SWELLING IN THE PRESENCE OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF BODY FLUIDS AND ENZYMES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |