PolyCeramics, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6076318 Interlocking puzzleExpiredFeb 22, 99Jun 20, 00[E04B]
5873206 Interlocking building blockExpiredMay 06, 97Feb 23, 99[E04B]
5732518 Arcuate building block structureExpiredSep 11, 96Mar 31, 98[E04B, E04C, E04G]
5705118 Process for producing a ceramic bodyExpiredMar 22, 94Jan 06, 98[B29C, C04B]
5560151 Building blocks forming hexagonal and pentagonal building units for modular structuresExpiredMar 06, 95Oct 01, 96[E04C, E04H]
5329737 Ceramic building blockExpiredOct 15, 93Jul 19, 94[E04B]
5298205 Ceramic filter processExpiredAug 27, 92Mar 29, 94[C04B]
5296180 Ceramic processExpiredMay 11, 92Mar 22, 94[C04B]
5261194 Ceramic building blockExpiredAug 02, 91Nov 16, 93[E04B]

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