Kamyr, Inc.

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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 THEREFOR1018
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 339
 
  
 
C13D PRODUCTION OR PURIFICATION OF SUGAR JUICES15
 
  
 
D21B FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT19
 
  
 
D21D TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE 18
 
  
 
G01S RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES1108
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361
 
  
 
H01Q AERIALS 1109

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5813758 Concentric ring fluidizing mixerDec 10, 93Sep 29, 98[B01F]
5674359 Continuous cooking of cellulosic fibrous material with cold alkali impregnationFeb 08, 95Oct 07, 97[D21C]
5628873 Chip bin assembly including a hollow transition with one dimensional convergence and side reliefDec 30, 94May 13, 97[D21C]
5622598 Chip pumping to a digesterApr 25, 95Apr 22, 97[D21C]
5567279 Variable stage pressure diffuserDec 02, 91Oct 22, 96[D21C]
5500083 Method of feeding cellulosic material to a digester using a chip bin with one dimensional convergence and side reliefFeb 01, 94Mar 19, 96[D21C]
5476572 Chip feeding for a continuous digesterJun 16, 94Dec 19, 95[D21C]
5444884 Controlling screen backflush and wash distribution in a pressure diffuserJul 15, 94Aug 29, 95[D21D]
5413677 Method for producing chemical pulp from hardwood chipsApr 05, 93May 09, 95[D21C]
5411634 Medium consistency ozone bleachingJun 07, 91May 02, 95[D21C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6306252 Heat recovery from spent digester cooking liquorExpiredApr 10, 95Oct 23, 01[D21C]
6153300 Bleaching cellulose pulp having cleanliness which varies significantly over time using at least two different bleaching stages and bleaching chemicalsExpiredApr 18, 94Nov 28, 00[D02G]
6106667 Treatment of recycled bleach plant filtratesExpiredMar 31, 92Aug 22, 00[D21C]
5687956 Post-and-panel building wallsExpiredJan 18, 96Nov 18, 97[E04H]
H001681 Discharge from pulping vessels without the aid of mechanical agitationExpiredSep 18, 95Oct 07, 97[D21C]
5660686 Cooking with spent liquor pretreatment of cellulose materialExpiredMar 14, 95Aug 26, 97[D21C]
5635025 Digester system containing a single vessel serving as all of a chip bin, steaming vessel, and chip chuteExpiredDec 05, 94Jun 03, 97[D21C]
5567262 Two stage pressure diffuserExpiredApr 16, 91Oct 22, 96[D21C]
5560818 Adjustable orifice for gas-sparged hydrocycloneExpiredSep 13, 94Oct 01, 96[B03D, B04C]
5552125 Dielectric coating for ozone generator electrodesExpiredJan 10, 94Sep 03, 96[C23C]
5549788 Minimal effluents discharge pulp mill with chemical recoveryExpiredAug 31, 93Aug 27, 96[D21C]
5529190 Gas sparged hydrocyclone with foam separating vesselExpiredFeb 06, 95Jun 25, 96[B03D, B04C]
5518698 Swirl flow ozone generatingExpiredSep 10, 93May 21, 96[B01J]
5472567 Method of chemically reacting a slurry with a gasExpiredDec 15, 94Dec 05, 95[D21D, D21C]
5458738 Clarifying suspended solids from liquid process streamsExpiredSep 08, 93Oct 17, 95[D21F]
5439555 Minimum adverse environmental pulp with feed to chlorate manufactureExpiredAug 31, 93Aug 08, 95[D21C]
5411633 Medium consistency pulp ozone bleachingExpiredApr 30, 91May 02, 95[D21C]
5405497 Method of chemically reacting a liquid with a gas in a vortexExpiredAug 28, 90Apr 11, 95[D21D, D21C]
5382326 Ozone mixing test apparatusExpiredApr 17, 92Jan 17, 95[D21C]
5380402 Reducing pulp mill liquid dischargeExpiredOct 13, 92Jan 10, 95[D21C]

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