ECC International Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 563
 
  
 
B03B SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS 18
 
  
 
B31F MECHANICAL WORKING OR DEFORMATION OF PAPER OR CARDBOARD 124
 
  
 
C01F COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS 120
 
  
 
C09C TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES 129
 
  
 
D21C PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR127
 
  
 
D21H PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR 137

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6277242 Creping adhesive containing an admixture of PAE resinsFeb 28, 00Aug 21, 01[B31F, D21H]
6068693 Method for separating mixture of finely divided minerals and product thereofJun 16, 97May 30, 00[B03B, C04B, C09C]
6063237 Treatment of solid containing material derived from effluent or waste from wastepaper treating processFeb 27, 97May 16, 00[D21C]
5516364 Method for producing low abrasion kaolin pigmentJan 20, 95May 14, 96[C04B]
5454865 Method for preparing refined kaolin in clay productsDec 23, 93Oct 03, 95[C04B]
5371051 Method for producing high opacifying kaolin pigmentDec 23, 93Dec 06, 94[C04B]
5332564 Process for production of rhombic shaped precipitated calcium carbonateJul 10, 92Jul 26, 94[C01F]
5261956 Method for improving the rheology of calcined kaolin clay productsOct 15, 92Nov 16, 93[C04B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6719881 Acid colloid in a microparticle system used in papermakingExpiredJul 05, 01Apr 13, 04[D21H, C02F]
6083317 Stabilized calcium carbonate composition using sodium silicate and one or more weak acids or alum and uses thereforExpiredNov 05, 96Jul 04, 00[C09C]
5913973 Method for producing high solids aqueous acid-resistant calcium carbonate suspensions and product thereofExpiredJul 08, 97Jun 22, 99[C09C]
5856397 Dry grinding aid for dry milling a calcined kaolin clay and a related methodExpiredNov 12, 96Jan 05, 99[C08K]
5744530 Granular calcium carbonate for use as a direct additive for thermoplasticsExpiredApr 25, 96Apr 28, 98[C08K]
5713998 Method for producing high opacifying kaolin pigmentExpiredFeb 14, 95Feb 03, 98[C04B]
5711799 Acid tolerant calcium carbonate composition and uses thereforExpiredMar 13, 96Jan 27, 98[C09C]
5683590 Treatment of waste paperExpiredMay 10, 96Nov 04, 97[C02F]
5647902 Stabilized calcium carbonate composition using sodium carbonate and mixtures of acids and uses thereforExpiredOct 20, 95Jul 15, 97[C09C, D21H]
5599388 Acid resistant calcium carbonate composition containing an aluminum salt, uses therefor and processes for its productionExpiredAug 24, 95Feb 04, 97[C09C]
5593488 Acid resistant calcium carbonate composition and uses thereforExpiredAug 24, 95Jan 14, 97[C09C]
5593489 Acid resistant carbonate composition containing an aluminum or magnesium hydroxide methods of preparation and uses thereforExpiredOct 20, 95Jan 14, 97[C09C]
5584923 Surface modified calcium carbonate composition and uses thereforExpiredApr 01, 96Dec 17, 96[C09C]
5547574 Apparatus for filtering mineral slurriesExpiredJul 21, 94Aug 20, 96[B01D]
5545338 Method for filtering mineral slurriesExpiredJul 21, 94Aug 13, 96[B01D]
5531821 Surface modified calcium carbonate composition and uses thereforExpiredAug 24, 95Jul 02, 96[C09C]
5522924 Method for producing high brightness low abrasion calcined kaolin pigmentExpiredMar 17, 95Jun 04, 96[C04B]
5458680 Method of producing aggregated composite pigments using organic silicon compoundsExpiredMar 25, 94Oct 17, 95[C09C, C08K]
5364579 Method for pelletizing calcined clayExpiredOct 10, 89Nov 15, 94[B28C]
5332493 Method for improving rheological properties of kaolin claysExpiredApr 28, 92Jul 26, 94[B03C, B03B]

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