Heinkel Industriezentrifugen GmbH & Co. KG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 3131

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5304306 Reverse filter centrifugeFeb 25, 93Apr 19, 94[B01D]
5277804 Sleeve filter centrifugeApr 14, 92Jan 11, 94[B01D]
5169525 Invertable filter centrifugeNov 08, 91Dec 08, 92[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6159360 Invertible filter centrifuge including a solids drierExpiredApr 28, 99Dec 12, 00[B01D]
6033563 Centrifuge with slide-in filterExpiredApr 29, 98Mar 07, 00[B01D]
5988398 Invertable filter centrifugeExpiredJun 26, 98Nov 23, 99[B01D]
5665925 Device for performing a weight measurement in centrifugesExpiredApr 28, 94Sep 09, 97[G01G]
5421997 Sleeve filter centrifugeExpiredJul 07, 93Jun 06, 95[B04B, B01D]
5286378 Sleeve filter centrifugeExpiredMar 23, 92Feb 15, 94[B01D]
5258128 Process for splitting off small pieces of filter cake from a pressure filterExpiredJul 19, 91Nov 02, 93[B01D]
5244567 Pressure filter with means to detect break in pressurizing membraneExpiredApr 17, 92Sep 14, 93[B01D]
5139665 Process and device for turning in the membrane of a pressure filter for suspensionsExpiredJul 08, 91Aug 18, 92[B01D]
5092995 Invertible filter centrifuge with a filler pipe connectable to a pressurization or depressurization sourceExpiredMay 09, 90Mar 03, 92[B01D]
4886907 Polysubstituted derivatives of naphthalene, their process of preparation and their application in the cosmetic and pharmaceutical fieldsExpiredApr 17, 87Dec 12, 89[C07C]
4707256 Filter for squeezing out suspensionsExpiredApr 17, 86Nov 17, 87[B01D]
4702831 Filter for squeezing out suspensionsExpiredApr 17, 86Oct 27, 87[B01D]

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