Voith Sulzer Paper Technology North America, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
D21F PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON326
 
  
 
B24B MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING 264
 
  
 
B01D SEPARATION 1133
 
  
 
B05C APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 144
 
  
 
B07B SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL 120
 
  
 
D21C PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR127
 
  
 
F16C SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 169
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6299733 Roll with composite material roll shell and head in a paper-making machineJun 07, 00Oct 09, 01[F16C, D21F]
6284103 Suction roll shell in a paper-making machine and method of manufacturing sameJul 21, 99Sep 04, 01[D21F]
6200204 Roll grinder with vibration dampeningSep 17, 99Mar 13, 01[B24B]
5958183 River water heat exchanger for cooling process liquid in a paper-making machineJun 05, 97Sep 28, 99[D21C]
5850701 Dryer group with controlled heating and cooling of a paper web in a paper-making machineJun 05, 97Dec 22, 98[D21F]
5597415 Profiling bar for a web coating deviceFeb 09, 95Jan 28, 97[B05C]
5551906 Caliper assembly for grinderNov 23, 94Sep 03, 96[B24B]
5326470 Non-compressive loading of a screen basket for a pulp pressure screening apparatusDec 08, 92Jul 05, 94[B01D]
5323913 Pressure screening apparatus with baffleDec 08, 92Jun 28, 94[B07B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7264689 Method of chemically loading fibers in a fiber suspensionExpiredMar 11, 02Sep 04, 07[D21H]
7013287 Stock preparation monitoring system and method of sameExpiredFeb 22, 00Mar 14, 06[G06F]
6623572 Pulper with extraction plate assembly having removable inserts and method of manufacturing sameExpiredJun 20, 01Sep 23, 03[D21C]
6623601 Roll for paper-making machineExpiredJan 22, 02Sep 23, 03[B29C]
6585116 Screening apparatus for fiber suspensionExpiredFeb 22, 00Jul 01, 03[B07B]
6571957 Screening apparatus for fiber suspensionExpiredAug 07, 00Jun 03, 03[B07B, D21D]
6533895 Apparatus and method for chemically loading fibers in a fiber suspensionExpiredFeb 24, 00Mar 18, 03[D21H]
6524443 Pulping system for a paper machineExpiredMar 15, 02Feb 25, 03[B26F]
6502434 Effluent shower for pulp washerExpiredOct 16, 00Jan 07, 03[D21C]
6503466 Apparatus and method for chemically loading fibers in a fiber suspensionExpiredAug 06, 98Jan 07, 03[B01F]
6491188 Revolver valve for discharging a pressurized vessel in a fiber stock preparation systemExpiredApr 02, 01Dec 10, 02[G01F]
6491754 Carbon fiber doctor bladeExpiredJun 13, 00Dec 10, 02[B05C]
6485571 Paper manufacturing and processing machine with closed loop control systemExpiredJul 20, 00Nov 26, 02[B05C]
6471825 Method for deflocculating and chemically loading fibers in a fiber suspension with calcium carbonateExpiredJun 28, 00Oct 29, 02[D21H]
6422496 Refiner for refining a fiber suspensionExpiredJun 14, 00Jul 23, 02[B02C]
6394279 Flotation machine for a fiber suspension and method of using sameExpiredJun 16, 00May 28, 02[B03D]
6395131 Flotation machine for a fiber suspension and method of using sameExpiredSep 19, 00May 28, 02[B03D, D21C]
6395132 Washing system and washer for a fiber suspensionExpiredFeb 24, 00May 28, 02[D21C]
6368458 Calender press for a paper-making machine with thermally compensated top and bottom rolls and low nip loadExpiredMar 24, 00Apr 09, 02[B02C, B30B]
6358367 Pulping system for a paper machineExpiredFeb 01, 00Mar 19, 02[B26F]

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