SULZER PUMPS LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
D21C PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR325
 
  
 
B01D SEPARATION 2132
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 141
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 161
 
  
 
F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS 146

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6098658 Method and apparatus for filling a pulp towerDec 30, 98Aug 08, 00[D21C]
5842833 Gas separation control in a centrifugal pump vacuum pumpJan 17, 97Dec 01, 98[F04B, F04C]
5711600 High consistency pulp tower with a parting member and the introduction of dilution liquidJun 07, 95Jan 27, 98[B01F, D21C]
5538597 Apparatus for the discharge of a mass towerDec 07, 93Jul 23, 96[D21C]
5167678 Apparatus for separating gas with a pump from a medium being pumpedApr 15, 91Dec 01, 92[B01D]
5141535 Apparatus for separating gas from a suspensionFeb 04, 91Aug 25, 92[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6592340 Control system for a vacuum pump used for removing liquid and a method of controlling said pumpExpiredDec 11, 00Jul 15, 03[F04B]
2001/0006,484 Method and apparatus for mixing a second medium with a first mediumAbandonedJan 11, 01Jul 05, 01[B01F]
6193406 Method and apparatus for mixing pulp a suspension with a fluid medium with a freely rotatable mixing rotorExpiredNov 25, 98Feb 27, 01[B01F]
5851350 Method and apparatus for pumping cellulose pulpExpiredDec 20, 96Dec 22, 98[D21C]
5711789 Apparatus for pumping gas-containing fiber suspensionsExpiredOct 13, 93Jan 27, 98[B01D]
5403442 Method of deaerating and pumping a fiber suspension prior to washingExpiredNov 29, 93Apr 04, 95[D21C, B01D]
5323914 Method of and apparatus for separating heavy impurities from fiber suspensions in connection with pumpingExpiredFeb 06, 92Jun 28, 94[B04B]
5324166 Apparatus and method for pumping a liquidExpiredJul 29, 91Jun 28, 94[F04D]
5228829 Method and apparatus for dividing flow of high-consistency fiber suspensionExpiredJul 12, 90Jul 20, 93[F01D]
5152663 Centrifugal pumpExpiredSep 07, 90Oct 06, 92[F04D]
5151010 Combined centrifugal and vacuum pumpExpiredSep 07, 90Sep 29, 92[F01D]
5116198 Centrifugal pumping apparatusExpiredSep 07, 90May 26, 92[F01D]
5114310 Centrifugal pump with sealing meansExpiredSep 07, 90May 19, 92[F01D]
5078573 Liquid ring pump having tapered blades and housingExpiredSep 07, 90Jan 07, 92[F01D]
5058615 Method and apparatus for pumping high consistency pulpExpiredJul 01, 88Oct 22, 91[E03B]
5040899 MixerExpiredMay 09, 90Aug 20, 91[B01F]
5019136 Method and apparatus for separating gas with a pump from a medium being pumpedExpiredApr 11, 89May 28, 91[B01D]
5000658 Apparatus for pumping high consistency fiber suspensionExpiredJun 22, 89Mar 19, 91[F01D]
4981413 Pump for and method of separating gas from a fluid to be pumpedExpiredApr 27, 89Jan 01, 91[F01D]
4976586 Pump with separate fluidizing vaned shaft adjacent impellerExpiredJul 18, 89Dec 11, 90[F04D]

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