BIOTEK

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7157102 Multi-layered microcapsules and method of preparing sameExpiredMay 31, 02Jan 02, 07[A61K]
7041320 High drug loaded injectable microparticle compositions and methods of treating opioid drug dependenceExpiredMay 31, 02May 09, 06[A61K]
5648097 Calcium mineral-based microparticles and method for the production thereofExpiredOct 04, 95Jul 15, 97[A61K, A01N]
4927687 Sustained release transdermal drug delivery compositionExpiredSep 22, 86May 22, 90[A61L]
4834978 Method of transdermal drug deliveryExpiredFeb 08, 88May 30, 89[A61F]
4810499 Transdermal drug delivery system and methodExpiredFeb 05, 88Mar 07, 89[A61F]
4707362 Sustained release compositionExpiredFeb 15, 85Nov 17, 87[A61F]
4687481 Transdermal drug delivery systemExpiredMar 03, 86Aug 18, 87[A61M]
4624665 Method of transdermal drug deliveryExpiredOct 01, 84Nov 25, 86[A61J, A61K, A01N, A61F]
4623588 Controlled release composite core coated microparticlesExpiredDec 02, 85Nov 18, 86[A61K, B05D]
4568559 Composite core coated microparticles and process of preparing sameExpiredFeb 06, 84Feb 04, 86[A61K, B05D]
4525164 Wearable medication infusion system with arcuated reservoirExpiredApr 24, 81Jun 25, 85[A61M]
4403984 System for demand-based adminstration of insulinExpiredDec 22, 80Sep 13, 83[G01N, A61B]
4402694 Body cavity access device containing a hormone sourceExpiredJul 16, 81Sep 06, 83[A61M]
4378016 Artificial endocrine gland containing hormone-producing cellsExpiredJul 15, 81Mar 29, 83[A61M]
4313439 Automated, spring-powered medicament infusion systemExpiredMar 24, 80Feb 02, 82[A61M]

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