Patent US3062720A successfully refreshed from Google Patents.
US3062720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sustained release pharmaceutical tablet
Assignee: Philips Roxane Inc
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Filing: 1959-05-20
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Granted: 1962-11-06
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Expires: 1979-05-20
Abstract
No abstract record available.
Inventors
- 👤 Christopher H Costello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:59
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A SUSTAINED RELEASE PHARMACEUTICAL TABLET CONSISTING ESSENTIALLY OF ABOUT 1 TO 70% OF A WATER SOLUBLE MEDICAMENT ABOUT 10 TO 40% OF A SUBSTANTIALLY WATER INSOLUBLE FATTY MATERIAL, ABOUT 5 TO 70% OF A FILLER, ABOUT 5 TO 10% OF A BINDER AND ABOUT 5 TO 20% OF A LUBRICANT, THE TABLET HAVING A TIME DELAY NUMBER OF ABOUT 250 TO 350, A HARDNES BETWEEN ABOUT 10 KG. AND 3 KG., AND BEING A SUBSTANTIALLY HOMOGENEOUS TABLET WHICH RETAINS ITS ORIGINAL SHAPE WHILE THE SOLUBLE MEDICAMENT IS LEACHED THEREFROM, THUS LEAVING A NETWORK OF MINUTE CHANNELS IN THE TABLET.
Claim 2
Dependent Claim
99 words
A SUSTAINED RELEASE PHARMACEUTICAL TABLET CONSISTING ESSENTIALLY OF ABOUT 1 TO 70% OF A WATER SOLUBLE MEDICAMENT ABOUT 10 TO 40% OF A SUBSTANTIALLY WATER INSOLUBLE FATTY MATERIAL, ABOUT 5 TO 70% OF A FILLER, ABOUT 5 TO 10% OF A BINDER AND ABOUT 5 TO 20% OF A LUBRICANT, THE TABLET HAVING A TIME DELAY NUMBER OF ABOUT 250 TO 350, A HARDNES BETWEEN ABOUT 10 KG. AND 3 KG., AND BEING A SUBSTANTIALLY HOMOGENEOUS TABLET WHICH RETAINS ITS ORIGINAL SHAPE WHILE THE SOLUBLE MEDICAMENT IS LEACHED THEREFROM, THUS LEAVING A NETWORK OF MINUTE CHANNELS IN THE TABLET.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |