PENWEST PHARMACEUTICALS COMPANY

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
A61K PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES 24231

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8389008 Delayed release dosage formsSep 17, 04Mar 05, 13[A61K]
7214387 Sustained release formulations of metforminJul 30, 03May 08, 07[A61K]
6245355 Sustained release matrix for high-dose insoluble drugsOct 19, 99Jun 12, 01[A61K]
6245356 Sustained release heterodisperse hydrogel systems-amorphous drugsFeb 04, 00Jun 12, 01[A61K]
6136343 Sustained release heterodisperse hydrogel systems for insoluble drugsDec 08, 98Oct 24, 00[A61K]
6093420 Sustained release matrix for high-dose insoluble drugsJul 08, 97Jul 25, 00[A61K]
6056977 Once-a-day controlled release sulfonylurea formulationOct 15, 97May 02, 00[A61K]
6048548 Sustained release heterodisperse hydrogel systems-amorphous drugsJun 29, 98Apr 11, 00[A61K]
6039980 Sustained release excipientJul 29, 98Mar 21, 00[A61K]
5846563 Sustained release heterodisperse hydrogel systems for insoluble drugsApr 18, 97Dec 08, 98[A61K]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2007/0196,482 Sustained release torsemide dosage formsAbandonedDec 15, 06Aug 23, 07[A61K]
2007/0104,778 Controlled-release emulsion compositionsAbandonedNov 07, 06May 10, 07[A61K]
7172766 Controlled release insufflation carrier for medicamentsExpiredJan 14, 02Feb 06, 07[A61F]
2006/0228,413 Controlled release venlafaxine formulationsAbandonedFeb 28, 06Oct 12, 06[A61K]
2006/0193,911 Controlled release venlafaxine formulationsAbandonedFeb 28, 06Aug 31, 06[A61K]
2006/0193,912 Controlled release O-desmethylvenlafaxine formulationsAbandonedFeb 28, 06Aug 31, 06[A61K]
2006/0105,035 Sustained release heterodisperse hydrogel systems for insoluble drugsAbandonedJan 17, 06May 18, 06[A61K]
2005/0238,715 Developing a delivery system for multi-pharmaceutical active materials at various release ratesAbandonedJun 22, 05Oct 27, 05[A61K]
2005/0169,991 Sustained release torsemide dosage formsAbandonedDec 10, 04Aug 04, 05[A61K]
2005/0118,267 Chronotherapeutic dosage formsAbandonedSep 17, 04Jun 02, 05[A61K]
6875793 Once-a-day controlled release sulfonylurea formulationExpiredMar 25, 03Apr 05, 05[A61K, A61P]
2004/0241,233 Sustained release heterodisperse hydrogel systems- amorphous drugsAbandonedJan 27, 04Dec 02, 04[A61K]
2004/0234,598 Sustained release heterodisperse hydrogel systems for insoluble drugsAbandonedMar 11, 04Nov 25, 04[A61K]
2004/0170,684 Sustained release matrix systems for highly soluble drugsAbandonedDec 18, 03Sep 02, 04[A61K]
2004/0121,012 Sustained release matrix for high-dose insoluble drugsAbandonedDec 09, 03Jun 24, 04[A61K]
6726930 Sustained release heterodisperse hydrogel systems for insoluble drugsExpiredSep 05, 00Apr 27, 04[A61K, A01N]
6709677 Sustained release heterodisperse hydrogel systems-amorphous drugsExpiredJun 12, 01Mar 23, 04[A61K]
6689386 Sustained release matrix for high-dose insoluble drugsExpiredApr 25, 01Feb 10, 04[A61K]
2003/0228,361 Sustained release metoprolol formulationsAbandonedApr 07, 03Dec 11, 03[A61K]
2003/0190,360 Chronotherapeutic dosage forms containing glucocorticosteroid and methods of treatmentAbandonedMar 13, 02Oct 09, 03[A61K]

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