US Patent No: 7,413,750
Number of patents in Portfolio can not be more than 2000
Process for producing solid oral dosage forms with sustained release of active ingredient
Stats
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Aug 19, 2008
Issued date -
Jun 5, 2001
filing date -
09/873,431
serial no -
In Force
status
Importance
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Abstract
The present invention relates to a process for producing solid oral dosage forms with sustained release of active ingredient, comprising at least one active ingredient, a preformulated mixture of polyvinyl acetate and polyvinylpyrrolidone, where appropriate, water-soluble polymers or lipophilic additives and, where appropriate, other conventional excipients, wherein this mixture or parts of this mixture are granulated by heating to from 40.degree. C. to 130.degree. C., and the granules are, after admixture with conventional excipients, subsequently tabletted.
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First Claim
Related Publications
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,801,460 Preparation of solid pharmaceutical forms | 109 | 1987 | |
| 6,635,279 Active ingredient-containing floating forms comprising polyvinyl acetate and polyvinylpyrrolidone, their use and production | 14 | 2001 | |
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| 6,103,264 Process for preparing a controlled release composition | 6 | 1998 | |
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| 5,169,645 Directly compressible granules having improved flow properties | 81 | 1989 | |
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| 4,837,032 Theophylline sustained release tablet | 18 | 1986 | |
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| 5,874,107 Sustained release tablet containing diclofenac-Na and methylhydroxypropyl-cellulose as a sustained release agent | 1 | 1996 | |
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| 5,403,593 Melt granulated compositions for preparing sustained release dosage forms | 29 | 1992 | |
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| 5,453,283 Orally administered solvent-free pharmaceutical preparation with delayed active-substance release, and a method of preparing the preparation | 20 | 1993 | |
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| 5,389,380 Sustained release pharmaceutical preparation and process for preparing the same | 7 | 1993 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Feb 19, 2016 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 19, 2020 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |