CLAYMAX CORPORATION, AN ILLINOIS CORPORATION

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5776547 Low permeability geosynthetic clay liner and method of manufacture thereofExpiredDec 16, 96Jul 07, 98[E02D]
5654064 Clay liner for steep slopesExpiredJun 04, 96Aug 05, 97[B32B]
5589257 Low permeability geosynthetic clay liner and method of manufacture thereofExpiredMay 08, 95Dec 31, 96[B32B]
5564864 Clay liner for steep slopesExpiredMar 07, 94Oct 15, 96[B09B, E02D, B32B]
5436050 Tufted geosynthetic clay liner and method of manufacture thereofExpiredJan 19, 93Jul 25, 95[G21F, D05C, B09B, B32B]
5403126 Surface friction enhanced geosynthetic clay linerExpiredMar 25, 93Apr 04, 95[E02D]
5360294 Bentonite liner with drainage system protectionExpiredMar 11, 94Nov 01, 94[E02D]
5114892 Clay mixture having contamination resistanceExpiredDec 21, 90May 19, 92[C04B]
4997695 Clay mixture having contamination resistanceExpiredFeb 01, 89Mar 05, 91[E02D, B32B]
4997701 Seawater resistant clay mixtureExpiredNov 21, 88Mar 05, 91[E02D, B32B]
4927297 Leak prevention structure, method and apparatusExpiredOct 04, 88May 22, 90[C09K, E02D]
4501788 Waterproofing soilExpiredSep 30, 82Feb 26, 85[B32B]

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