DEN-MAT CORPORATION

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2008/0070,191 Method for Forming Polychromatic Pressable Porcelain Dental RestorationAbandonedAug 17, 07Mar 20, 08[A61C]
2003/0017,435 Method and system for tooth whitening for long term efficacyAbandonedJul 18, 01Jan 23, 03[A61C]
5009709 Strong dental porcelain and method for its manufactureExpiredJul 03, 90Apr 23, 91[C01K, A61C]
RE33100 Dental compositions incorporating glass ionomersExpiredJun 29, 88Oct 24, 89[A61K, C08L]
4738722 Dental compositions incorporating glass ionomersExpiredSep 15, 86Apr 19, 88[A61K, C08L]
4674980 Dental composite and porcelain repairExpiredSep 22, 83Jun 23, 87[A61K, C08F, C08L]
4297266 Microfilled dental composite and method using the sameExpiredFeb 08, 80Oct 27, 81[A61K, C08K]
4294349 Kit for repair of porcelain dental prosthesesExpiredJun 11, 80Oct 13, 81[B65D]
4292236 Composition for repair of porcelain fixturesExpiredNov 16, 79Sep 29, 81[C09K, C08K]
4264489 Provisional crown-and-bridge resin containing tetrahydrofuryl methacrylateExpiredJan 14, 80Apr 28, 81[C08F, C08L]
4256603 Composition for repair of porcelain dental prosthesesExpiredJul 21, 78Mar 17, 81[C09K]
4204978 Tooth crack detectorExpiredJan 29, 79May 27, 80[C09K, G01N, A61C]

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