Frenkel C-D Aktiengesellschaft

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5304051 Plasticising unit for a screw injection moulding machine having improved volume adjustment meansExpiredJun 24, 91Apr 19, 94[B29C]
5304054 Plasticizing sections of cold feed rubber extrudersExpiredOct 27, 92Apr 19, 94[B29C]
5215374 Plasticizing sections of cold feed rubber extrudersExpiredApr 25, 91Jun 01, 93[B29B]
4957372 Means for improving the uniformity-performance of cold feed rubber-extrudersExpiredAug 29, 89Sep 18, 90[B28C]
4184772 Mixing apparatusExpiredJul 11, 77Jan 22, 80[B28C, B01F, A21C]

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