US Patent No: 6,254,887
Number of patents in Portfolio can not be more than 2000
Controlled release tramadol
Stats
-
Jul 3, 2001
Issued date -
Jul 10, 1996
filing date -
08/677,798
serial no -
In Force
status
Importance
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Abstract
A controlled release preparation for oral administration contains tramadol, or a pharmaceutically acceptable salt thereof, as active ingredient.
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First Claim
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International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,828,836 Controlled release pharmaceutical composition | 127 | 1987 | |
| 4,834,985 Controlled release pharmaceutical composition | 160 | 1987 | |
| 4,990,341 Controlled release hydromorphone composition | 84 | 1989 | |
| 5,266,331 Controlled release oxycodone compositions | 92 | 1991 | |
| 5,273,760 Stabilized controlled release substrate having a coating derived from an aqueous dispersion of hydrophobic polymer | 124 | 1991 | |
| 5,286,493 Stabilized controlled release formulations having acrylic polymer coating | 125 | 1992 | |
| 5,549,912 Controlled release oxycodone compositions | 80 | 1993 | |
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| 5,202,128 Sustained release pharmaceutical composition | 111 | 1990 | |
| 5,330,766 Sustained release pharmaceutical composition | 74 | 1993 | |
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| 4,801,460 Preparation of solid pharmaceutical forms | 109 | 1987 | |
| 5,073,379 Continuous preparation of solid pharmaceutical forms | 79 | 1989 | |
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| 4,844,907 Pharmaceutical composition comprising analgesic and anti-inflammatory agent | 97 | 1986 | |
| 5,071,646 Pharmaceutical ion exchange resin composition | 73 | 1989 | |
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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 | |
| 5,472,710 Pharmaceutical preparation to be administered orally with controlled release of active substance and method for its manufacture | 43 | 1994 | |
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| 4,483,847 Process for the manufacture of a pharmaceutical composition with a retarded liberation of active material | 62 | 1983 | |
| 5,167,964 Semi-enteric drug delivery systems and methods for preparing same | 65 | 1992 | |
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| 4,343,789 Sustained release pharmaceutical composition of solid medical material | 72 | 1980 | |
| 4,380,534 Solid drug preparations | 40 | 1981 | |
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| 4,613,619 Anti-arrhythmic amino-alcohols | 19 | 1985 | |
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| 5,300,300 Controlled release gastroresistant pharmaceutical formulations for oral administration containing bile acids and their salts | 28 | 1992 | |
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| 5,521,178 Combination medication containing flupirtin and morphine for the treatment of pain and the prevention of morphine dependence | 12 | 1993 | |
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| 4,894,234 Novel drug delivery system for antiarrhythmics | 65 | 1988 | |
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| 5,007,790 Sustained-release oral drug dosage form | 130 | 1989 | |
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| 5,133,974 Extended release pharmaceutical formulations | 198 | 1990 | |
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| 5,169,645 Directly compressible granules having improved flow properties | 81 | 1989 | |
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| 4,917,899 Controlled absorption diltiazem formulation | 52 | 1987 | |
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| 4,880,830 Slow release formulation | 45 | 1987 | |
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| 4,844,909 Controlled release hydromorphone composition | 78 | 1987 | |
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| 5,196,203 Theophylline dosage form | 37 | 1991 | |
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| 4,389,393 Sustained release therapeutic compositions based on high molecular weight hydroxypropylmethylcellulose | 206 | 1982 | |
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| 5,178,868 Dosage form | 51 | 1991 | |
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| 5,132,142 Apparatus and method for producing pellets by layering power onto particles | 44 | 1991 | |
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| 4,935,246 Process for the coating of granules | 99 | 1988 | |
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| 4,329,794 Ripping attachment for dragline | 28 | 1980 | |
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| 4,217,925 Gasoline line lock | 7 | 1978 | |
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| 5,468,744 Composition comprising a tramadol material and any of codeine, oxycodone or hydrocodone and their use | 14 | 1994 | |
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| 4,421,736 Sustained release diethylpropion compositions | 53 | 1982 | |
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| 4,797,410 Suppression of withdrawal symptoms in opioid-induced tolerance or dependence | 28 | 1987 | |
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| 5,030,400 Process and an apparatus for agglomeration of a powdery material | 57 | 1990 | |
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| 5,403,593 Melt granulated compositions for preparing sustained release dosage forms | 29 | 1992 | |
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| 5,395,626 Multilayered controlled release pharmaceutical dosage form | 88 | 1994 | |
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| 4,925,675 Erythromycin microencapsulated granules | 28 | 1988 | |
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| 4,861,598 Controlled release bases for pharmaceuticals | 96 | 1986 | |
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| 4,834,984 Controlled release dihydrocodeine composition | 73 | 1987 | |
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| 5,271,934 Encapsulated antiperspirant salts and deodorant/antiperspirants | 75 | 1992 | |
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| 4,708,874 Devices for the controlled release of active substances, as well as process for the preparation thereof | 52 | 1986 | |
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| 4,533,562 Method of preparing coated solid preparations | 47 | 1984 | |
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| 5,204,119 External preparation comprising calcium silicate | 33 | 1991 | |
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| 5,162,117 Controlled release flutamide composition | 50 | 1991 | |
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| 5,023,089 Sustained-release preparations and the process thereof | 44 | 1989 | |
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| 5,292,461 Process for the production of pellets | 46 | 1991 | |
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| 5,026,560 Spherical granules having core and their production | 96 | 1988 | |
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| 5,126,145 Controlled release tablet containing water soluble medicament | 96 | 1990 | |
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| 4,801,458 Sustained release pharmaceutical plaster | 89 | 1987 | |
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| 4,987,136 Method for controlling gastrointestinal dysmotility | 80 | 1986 | |
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| 4,366,172 4-Amino-cyclohexanols, their pharmaceutical compositions and methods of use | 28 | 1977 | |
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| 5,321,012 Inhibiting the development of tolerance to and/or dependence on a narcotic addictive substance | 92 | 1993 | |
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| 4,259,314 Method and composition for the preparation of controlled long-acting pharmaceuticals | 107 | 1979 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 3, 2013 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| 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 |