CHEMREC AKTIEBOLAG

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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 THEREFOR1613
 
  
 
B01D SEPARATION 3131
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 141
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 1108
 
  
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 167
 
  
 
C10J PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES 120
 
  
 
F27D DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE 124

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9175439 Method for arranging a chemical barrier in a gasifying reactor for black liquor, a chemical gasifying reactor, a barrier layer of a reactor and a method for manufacturing a building block for such a barrier layerSep 06, 06Nov 03, 15[C04B, C10J, B01J, F27D, B01D, D21C]
7294225 Process for production of synthesis gas in combination with the maintenance of the energy balance for a pulp millNov 15, 01Nov 13, 07[D21C]
6540510 Hemispherical dome for refractory vesselMar 11, 02Apr 01, 03[F27D]
6238468 Quench vesselMar 08, 99May 29, 01[B01D]
6143130 Polysulfide pulping processDec 17, 97Nov 07, 00[D21C]
6113739 Process for washing gas formed by gasifying black liquorDec 11, 96Sep 05, 00[D21C]
6062547 Quench vessel for recovering chemicals and energy from spent liquorsJun 12, 98May 16, 00[B01F]
6030493 Process for recovering chemicals and energy from cellulose spent liquor using multiple gasifiersMay 02, 97Feb 29, 00[D21C]
6027609 Pulp-mill recovery installation for recovering chemicals and energy from cellulose spent liquor using multiple gasifiersMay 02, 97Feb 22, 00[D21C]
5976321 Process for making sulfur enhanced undigested cellulosic fiber material and pulpOct 29, 97Nov 02, 99[D21C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0144,081 GASIFICATION REACTOR COMPRISING A PRESSURE ABSORBING COMPLIANT STRUCTUREAbandonedJun 15, 12May 29, 14[C10B]
2014/0102,002 GASIFICATION OF BIO-OIL AND ALKALI CONTAINING ENERGY RICH AQUEOUS SOLUTIONS FROM PULP MILLSAbandonedApr 26, 12Apr 17, 14[C01B]
2012/0073,772 GASIFICATION OF SULPHITE THICK LIQUORAbandonedSep 30, 11Mar 29, 12[D21C]
7217302 Process for cooling solid and gaseous material during gasification of spent liquorExpiredMar 22, 00May 15, 07[C10J]
6840766 Refractory vessel and lining thereforExpiredJan 14, 04Jan 11, 05[F23M]
6790246 Apparatus for gasification of spent liquorExpiredNov 02, 01Sep 14, 04[D21C]
6780211 Device for gasification of spent liquorExpiredNov 14, 01Aug 24, 04[D21C]
6725787 Refractory vessel and lining thereforExpiredMar 11, 02Apr 27, 04[F23M]
6705241 Torispherical dome for refractory vesselExpiredMar 11, 02Mar 16, 04[F23M, F27D]
6500301 Apparatus for gasification of spent liquorExpiredNov 06, 01Dec 31, 02[D21C]
5507141 Process for recovering energy from a combustible gasExpiredNov 29, 94Apr 16, 96[F02C]
5486269 Gasification of carbonaceous material in a reactor having a gasification zone and a combustion zoneExpiredApr 28, 94Jan 23, 96[D21C]
5407455 Reactor for gasification of cellulose-waste liquors especially black liquorExpiredSep 27, 93Apr 18, 95[C10J]
5370771 Process for recovering energy and chemicals from spent liquor using low frequency soundExpiredMar 20, 92Dec 06, 94[D21C]
4917763 Method of recovering chemical from spent pulp liquorsExpiredJun 10, 88Apr 17, 90[D21C]
4710269 Recovering chemicals from spent pulp liquorsExpiredJan 27, 86Dec 01, 87[D21C]
4692209 Recovery of chemicals from pulp waste liquorExpiredMay 27, 86Sep 08, 87[D21C]
4601786 Recovery of chemicals from pulp waste liquor with plasma generator heatingExpiredApr 06, 84Jul 22, 86[D21C]

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