DRM, DR. MUELLER AG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 4130

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7077968 Method for continuously filtering raw brine for use in chlor-alkali electrolysisFeb 24, 03Jul 18, 06[B01D]
6413422 Candle filter elements and method for fixing same in a pressure vesselJan 24, 01Jul 02, 02[B01D]
5135665 Multichamber-candle filter elementApr 01, 91Aug 04, 92[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2016/0199,764 Device for measuring the overfill of filter elements comprising filter cakes in pressure filtersAbandonedJun 23, 14Jul 14, 16[B01D]
2014/0131,291 DEVICE FOR SEPARATING SOLID PARTICLES FROM LIQUID, AND USE THEREOFAbandonedMar 15, 12May 15, 14[B01D]
2010/0120,127 METHOD FOR REMOVING BACTERIA FROM A FERMENTATION BROTHAbandonedNov 07, 05May 13, 10[C12N]
7378238 Method for treating biomass for producing cell lysate containing plasmid DNAExpiredDec 24, 01May 27, 08[C12Q]
6860394 Candle filter elementExpiredFeb 16, 01Mar 01, 05[B01D]
5525221 Sterile filtration candle filter for suspensionsExpiredDec 19, 94Jun 11, 96[B01D]
5435911 Back-washable filter element comprised of perforated tubesExpiredMay 13, 93Jul 25, 95[B01D]
5384034 Candle precoated filter for residual volume filtrationExpiredMay 19, 93Jan 24, 95[B01D]
5085997 Method of separating yeasts from fermentation liquorsExpiredOct 22, 90Feb 04, 92[C12P, C12N]
5057232 Filter element and method of filtrationExpiredJan 24, 90Oct 15, 91[B01D]
4915851 Clarifying filter-centrifuge and method of filtering suspensionsExpiredAug 29, 88Apr 10, 90[B04B, B01D]
4808308 Clarifying filter-centrifuge and method of filtering suspensionsExpiredSep 11, 86Feb 28, 89[B04B]
4650580 Filter candle and method for producing the sameExpiredJul 10, 85Mar 17, 87[B01D]
4612126 Clarifying filtering centrifuge and method of useExpiredSep 30, 82Sep 16, 86[B01D]
4604201 FilterExpiredAug 03, 81Aug 05, 86[B01D]
4591446 Method of filtering and a device for filtering solid-containing liquidsExpiredAug 08, 84May 27, 86[B01D]
4578197 Method of and filter thickener for thickening of suspensionsExpiredJul 23, 82Mar 25, 86[B01D]
4511471 Filter apparatus for continuously thickening suspensionsExpiredJun 02, 83Apr 16, 85[B01D]
4500435 Method and apparatus for cleaning pressure filtersExpiredSep 06, 83Feb 19, 85[B01D]
4488965 Arrangement for fastening filter candles and filter apparatus provided therewithExpiredJul 05, 83Dec 18, 84[B01D]

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